23161640939802 has 24 divisors (see below), whose sum is σ = 52042205569536. Its totient is φ = 7720546979772.

The previous prime is 23161640939737. The next prime is 23161640939807. The reversal of 23161640939802 is 20893904616132.

23161640939802 is a `hidden beast` number, since 2 + 316 + 164 + 0 + 93 + 9 + 80 + 2 = 666.

It is a super-2 number, since 2×23161640939802² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (23161640939807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23828848218 + ... + 23828849189.

It is an arithmetic number, because the mean of its divisors is an integer number (2168425232064).

Almost surely, 2^{23161640939802} is an apocalyptic number.

23161640939802 is an abundant number, since it is smaller than the sum of its proper divisors (28880564629734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23161640939802 is an equidigital number, since it uses as much as digits as its factorization.

23161640939802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47657697424 (or 47657697412 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 23161640939802 in words is "twenty-three trillion, one hundred sixty-one billion, six hundred forty million, nine hundred thirty-nine thousand, eight hundred two".