23664772072 has 16 divisors (see below), whose sum is σ = 46981533060. Its totient is φ = 11136363264.

The previous prime is 23664772069. The next prime is 23664772121. The reversal of 23664772072 is 27027746632.

It can be written as a sum of positive squares in 2 ways, for example, as 23650133796 + 14638276 = 153786^2 + 3826^2 .

It is a super-2 number, since 2×23664772072² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87002703 + ... + 87002974.

Almost surely, 2^23664772072 is an apocalyptic number.

It is an amenable number.

23664772072 is a deficient number, since it is larger than the sum of its proper divisors (23316760988).

23664772072 is a wasteful number, since it uses less digits than its factorization.

23664772072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174005700 (or 174005696 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 23664772072 in words is "twenty-three billion, six hundred sixty-four million, seven hundred seventy-two thousand, seventy-two".