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13006070470449 = 32721717332
BaseRepresentation
bin1011110101000011011000…
…1101011101011100110001
31201001100221102011101020100
42331100312031131130301
53201042413020023244
643354523431503013
72511441356633100
oct275206615353461
951040842141210
1013006070470449
114164930793021
1215607b6827a69
1373460c528b74
1432d6d633a037
151784b758eb69
hexbd43635d731

13006070470449 has 27 divisors (see below), whose sum is σ = 21853864712043. Its totient is φ = 7431996992112.

The previous prime is 13006070470381. The next prime is 13006070470483. The reversal of 13006070470449 is 94407407060031.

The square root of 13006070470449 is 3606393.

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

13006070470449 is a `hidden beast` number, since 1 + 30 + 0 + 607 + 0 + 4 + 7 + 0 + 4 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11228296248225 + 1777774222224 = 3350865^2 + 1333332^2 .

It is not a de Polignac number, because 13006070470449 - 229 = 13005533599537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13006070470489) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 75648387 + ... + 75820119.

Almost surely, 213006070470449 is an apocalyptic number.

13006070470449 is the 3606393-rd square number.

13006070470449 is the 1803197-th centered octagonal number.

It is an amenable number.

13006070470449 is a deficient number, since it is larger than the sum of its proper divisors (8847794241594).

13006070470449 is an frugal number, since it uses more digits than its factorization.

13006070470449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343486 (or 171743 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 13006070470449 in words is "thirteen trillion, six billion, seventy million, four hundred seventy thousand, four hundred forty-nine".

Divisors: 1 3 7 9 21 49 63 147 441 171733 515199 1202131 1545597 3606393 8414917 10819179 25244751 75734253 29492223289 88476669867 206445563023 265430009601 619336689069 1445118941161 1858010067207 4335356823483 13006070470449