23161603258881 has 24 divisors (see below), whose sum is σ = 34921648397376. Its totient is φ = 14764892487840.

The previous prime is 23161603258877. The next prime is 23161603258883. The reversal of 23161603258881 is 18885230616132.

23161603258881 is a `hidden beast` number, since 2 + 3 + 1 + 6 + 1 + 603 + 25 + 8 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 23161603258881 - 2² = 23161603258877 is a prime.

It is a super-2 number, since 2×23161603258881² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23161603258883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17643375 + ... + 18910628.

It is an arithmetic number, because the mean of its divisors is an integer number (1455068683224).

Almost surely, 2^{23161603258881} is an apocalyptic number.

It is an amenable number.

23161603258881 is a deficient number, since it is larger than the sum of its proper divisors (11760045138495).

23161603258881 is a wasteful number, since it uses less digits than its factorization.

23161603258881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36557093 (or 36557090 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 23161603258881 in words is "twenty-three trillion, one hundred sixty-one billion, six hundred three million, two hundred fifty-eight thousand, eight hundred eighty-one".