23978056644 has 48 divisors (see below), whose sum is σ = 62212550400. Its totient is φ = 7986614688.

The previous prime is 23978056637. The next prime is 23978056673. The reversal of 23978056644 is 44665087932.

23978056644 is a `hidden beast` number, since 2 + 3 + 9 + 78 + 0 + 566 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59662 + ... + 226970.

It is an arithmetic number, because the mean of its divisors is an integer number (1296094800).

Almost surely, 2^23978056644 is an apocalyptic number.

It is an amenable number.

23978056644 is an abundant number, since it is smaller than the sum of its proper divisors (38234493756).

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

23978056644 is a wasteful number, since it uses less digits than its factorization.

23978056644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168649 (or 168641 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 23978056644 in words is "twenty-three billion, nine hundred seventy-eight million, fifty-six thousand, six hundred forty-four".