74991637068 has 48 divisors (see below), whose sum is σ = 175711904256. Its totient is φ = 24892816320.

The previous prime is 74991637067. The next prime is 74991637087. The reversal of 74991637068 is 86073619947.

It is not an unprimeable number, because it can be changed into a prime (74991637067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8753355 + ... + 8761917.

It is an arithmetic number, because the mean of its divisors is an integer number (3660664672).

Almost surely, 2^74991637068 is an apocalyptic number.

It is an amenable number.

74991637068 is an abundant number, since it is smaller than the sum of its proper divisors (100720267188).

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

74991637068 is a wasteful number, since it uses less digits than its factorization.

74991637068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11534 (or 11532 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 74991637068 in words is "seventy-four billion, nine hundred ninety-one million, six hundred thirty-seven thousand, sixty-eight".