74729559918 has 16 divisors (see below), whose sum is σ = 160955975376. Its totient is φ = 22993710720.

The previous prime is 74729559881. The next prime is 74729559943. The reversal of 74729559918 is 81995592747.

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, 479035563 + ... + 479035718.

It is an arithmetic number, because the mean of its divisors is an integer number (10059748461).

Almost surely, 2^74729559918 is an apocalyptic number.

74729559918 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

74729559918 is an abundant number, since it is smaller than the sum of its proper divisors (86226415458).

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

74729559918 is a wasteful number, since it uses less digits than its factorization.

74729559918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958071299.

The product of its digits is 57153600, while the sum is 66.

The spelling of 74729559918 in words is "seventy-four billion, seven hundred twenty-nine million, five hundred fifty-nine thousand, nine hundred eighteen".