23473937664 has 108 divisors (see below), whose sum is σ = 67952469312. Its totient is φ = 7793280000.

The previous prime is 23473937651. The next prime is 23473937677. The reversal of 23473937664 is 46673937432.

23473937664 is a `hidden beast` number, since 23 + 473 + 93 + 7 + 6 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (23473937651) and next prime (23473937677).

It is a self number, because there is not a number n which added to its sum of digits gives 23473937664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558009 + ... + 598599.

Almost surely, 2^23473937664 is an apocalyptic number.

23473937664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23473937664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33976234656).

23473937664 is an abundant number, since it is smaller than the sum of its proper divisors (44478531648).

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

23473937664 is a wasteful number, since it uses less digits than its factorization.

23473937664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40864 (or 40847 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 54.

The spelling of 23473937664 in words is "twenty-three billion, four hundred seventy-three million, nine hundred thirty-seven thousand, six hundred sixty-four".