23664641312 has 24 divisors (see below), whose sum is σ = 50173591356. Its totient is φ = 10922141952.

The previous prime is 23664641311. The next prime is 23664641353. The reversal of 23664641312 is 21314646632.

It can be written as a sum of positive squares in 2 ways, for example, as 23432261776 + 232379536 = 153076^2 + 15244^2 .

It is not an unprimeable number, because it can be changed into a prime (23664641311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28442663 + ... + 28443494.

Almost surely, 2^23664641312 is an apocalyptic number.

It is an amenable number.

23664641312 is an abundant number, since it is smaller than the sum of its proper divisors (26508950044).

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

23664641312 is a wasteful number, since it uses less digits than its factorization.

23664641312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56886180 (or 56886172 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The spelling of 23664641312 in words is "twenty-three billion, six hundred sixty-four million, six hundred forty-one thousand, three hundred twelve".