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30471294246561 = 327283231672
BaseRepresentation
bin1101110110110101001101…
…01010110101111010100001
310222220000201212222002212100
412323122212222311322201
512443220202311342221
6144450152550321013
76263323035365400
oct673324652657241
9128800655862770
1030471294246561
119788892243083
12350165a959169
13140057a3971ac
14774b65dc9637
1537c965738926
hex1bb6a6ab5ea1

30471294246561 has 81 divisors (see below), whose sum is σ = 51840735287601. Its totient is φ = 17196951222864.

The previous prime is 30471294246553. The next prime is 30471294246581. The reversal of 30471294246561 is 16564249217403.

The square root of 30471294246561 is 5520081.

It is a perfect power (a square), and thus also a powerful number.

30471294246561 is a `hidden beast` number, since 3 + 0 + 4 + 71 + 2 + 9 + 4 + 2 + 4 + 6 + 561 = 666.

It is not a de Polignac number, because 30471294246561 - 23 = 30471294246553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30471294246498 and 30471294246507.

It is not an unprimeable number, because it can be changed into a prime (30471294246541) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 9621499600 + ... + 9621502766.

Almost surely, 230471294246561 is an apocalyptic number.

30471294246561 is the 5520081-st square number.

30471294246561 is the 2760041-st centered octagonal number.

It is an amenable number.

30471294246561 is a deficient number, since it is larger than the sum of its proper divisors (21369441041040).

30471294246561 is an frugal number, since it uses more digits than its factorization.

30471294246561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6520 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 30471294246561 in words is "thirty trillion, four hundred seventy-one billion, two hundred ninety-four million, two hundred forty-six thousand, five hundred sixty-one".

Divisors: 1 3 7 9 21 49 63 83 147 249 441 581 747 1743 3167 4067 5229 6889 9501 12201 20667 22169 28503 36603 48223 62001 66507 144669 155183 199521 262861 337561 434007 465549 788583 1012683 1396647 1840027 2365749 3038049 5520081 10029889 12880189 16560243 21817463 30089667 38640567 65452389 70209223 90269001 115921701 152722241 196357167 210627669 458166723 491464561 631883007 832480787 1069055687 1374500169 1474393683 2497442361 3207167061 4423181049 5827365509 7492327083 9621501183 17482096527 40791558563 52446289581 69095905321 122374675689 207287715963 367124027067 483671337247 621863147889 1451014011741 3385699360729 4353042035223 10157098082187 30471294246561