23257945161 has 48 divisors (see below), whose sum is σ = 39561125760. Its totient is φ = 13017903360.

The previous prime is 23257945147. The next prime is 23257945169. The reversal of 23257945161 is 16154975232.

23257945161 is a `hidden beast` number, since 2 + 32 + 579 + 45 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 23257945161 - 2²¹ = 23255848009 is a prime.

It is a super-2 number, since 2×23257945161² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23257945169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110076 + ... + 242141.

It is an arithmetic number, because the mean of its divisors is an integer number (824190120).

Almost surely, 2^23257945161 is an apocalyptic number.

It is an amenable number.

23257945161 is a deficient number, since it is larger than the sum of its proper divisors (16303180599).

23257945161 is a wasteful number, since it uses less digits than its factorization.

23257945161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352286 (or 352283 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 23257945161 in words is "twenty-three billion, two hundred fifty-seven million, nine hundred forty-five thousand, one hundred sixty-one".