23657675640 has 32 divisors (see below), whose sum is σ = 70973027280. Its totient is φ = 6308713472.

The previous prime is 23657675603. The next prime is 23657675663. The reversal of 23657675640 is 4657675632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98573529 + ... + 98573768.

Almost surely, 2^23657675640 is an apocalyptic number.

23657675640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23657675640 is an abundant number, since it is smaller than the sum of its proper divisors (47315351640).

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

23657675640 is a wasteful number, since it uses less digits than its factorization.

23657675640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197147311 (or 197147307 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 51.

The spelling of 23657675640 in words is "twenty-three billion, six hundred fifty-seven million, six hundred seventy-five thousand, six hundred forty".