23664899556 has 27 divisors (see below), whose sum is σ = 59821940451. Its totient is φ = 7887992184.

The previous prime is 23664899537. The next prime is 23664899561. The reversal of 23664899556 is 65599846632.

The square root of 23664899556 is 153834.

It is a perfect power (a square), and thus also a powerful number.

23664899556 is a `hidden beast` number, since 2 + 3 + 66 + 489 + 95 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 23664899493 and 23664899502.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 910185 + ... + 935823.

Almost surely, 2^23664899556 is an apocalyptic number.

23664899556 is the 153834-th square number.

It is an amenable number.

23664899556 is an abundant number, since it is smaller than the sum of its proper divisors (36157040895).

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

23664899556 is an frugal number, since it uses more digits than its factorization.

23664899556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51288 (or 25644 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 63.

The spelling of 23664899556 in words is "twenty-three billion, six hundred sixty-four million, eight hundred ninety-nine thousand, five hundred fifty-six".