74564731968 has 56 divisors (see below), whose sum is σ = 208890912672. Its totient is φ = 23392856064.

The previous prime is 74564731939. The next prime is 74564731981. The reversal of 74564731968 is 86913746547.

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, 11419030 + ... + 11425557.

Almost surely, 2^74564731968 is an apocalyptic number.

It is an amenable number.

74564731968 is an abundant number, since it is smaller than the sum of its proper divisors (134326180704).

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

74564731968 is a wasteful number, since it uses less digits than its factorization.

74564731968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22844619 (or 22844609 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The spelling of 74564731968 in words is "seventy-four billion, five hundred sixty-four million, seven hundred thirty-one thousand, nine hundred sixty-eight".