23978461812 has 24 divisors (see below), whose sum is σ = 57314373312. Its totient is φ = 7797873600.

The previous prime is 23978461811. The next prime is 23978461823. The reversal of 23978461812 is 21816487932.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978461811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24367864 + ... + 24368847.

It is an arithmetic number, because the mean of its divisors is an integer number (2388098888).

Almost surely, 2^23978461812 is an apocalyptic number.

It is an amenable number.

23978461812 is an abundant number, since it is smaller than the sum of its proper divisors (33335911500).

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

23978461812 is a wasteful number, since it uses less digits than its factorization.

23978461812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48736759 (or 48736757 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The spelling of 23978461812 in words is "twenty-three billion, nine hundred seventy-eight million, four hundred sixty-one thousand, eight hundred twelve".