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153061661231 = 4320981169657
BaseRepresentation
bin1000111010001100101…
…1111001101000101111
3112122002010112000111222
42032203023321220233
510001432241124411
6154152054333555
714026003440203
oct2164313715057
9478063460458
10153061661231
1159a05354596
12257b805a2bb
1311583972b1b
1475a0248b03
153eac7a34db
hex23a32f9a2f

153061661231 has 8 divisors (see below), whose sum is σ = 156629622864. Its totient is φ = 149494080960.

The previous prime is 153061661201. The next prime is 153061661273. The reversal of 153061661231 is 132166160351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 153061661231 - 222 = 153057466927 is a prime.

It is a super-2 number, since 2×1530616612312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153061661191 and 153061661200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153061661201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817355 + ... + 987011.

It is an arithmetic number, because the mean of its divisors is an integer number (19578702858).

Almost surely, 2153061661231 is an apocalyptic number.

153061661231 is a deficient number, since it is larger than the sum of its proper divisors (3567961633).

153061661231 is a wasteful number, since it uses less digits than its factorization.

153061661231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190681.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 153061661231 in words is "one hundred fifty-three billion, sixty-one million, six hundred sixty-one thousand, two hundred thirty-one".

Divisors: 1 43 20981 169657 902183 7295251 3559573517 153061661231