23681556472 has 32 divisors (see below), whose sum is σ = 51238886400. Its totient is φ = 10050699744.

The previous prime is 23681556469. The next prime is 23681556473. The reversal of 23681556472 is 27465518632.

It is a super-2 number, since 2×23681556472² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23681556473) 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, 2047072 + ... + 2058607.

It is an arithmetic number, because the mean of its divisors is an integer number (1601215200).

Almost surely, 2^23681556472 is an apocalyptic number.

It is an amenable number.

23681556472 is an abundant number, since it is smaller than the sum of its proper divisors (27557329928).

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

23681556472 is a wasteful number, since it uses less digits than its factorization.

23681556472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105795 (or 4105791 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The spelling of 23681556472 in words is "twenty-three billion, six hundred eighty-one million, five hundred fifty-six thousand, four hundred seventy-two".