74731408257 has 16 divisors (see below), whose sum is σ = 108787320000. Its totient is φ = 45255475200.

The previous prime is 74731408229. The next prime is 74731408291. The reversal of 74731408257 is 75280413747.

It is not a de Polignac number, because 74731408257 - 2⁸ = 74731408001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74731408207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 865344 + ... + 947777.

It is an arithmetic number, because the mean of its divisors is an integer number (6799207500).

Almost surely, 2^74731408257 is an apocalyptic number.

It is an amenable number.

74731408257 is a deficient number, since it is larger than the sum of its proper divisors (34055911743).

74731408257 is a wasteful number, since it uses less digits than its factorization.

74731408257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814384.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 74731408257 in words is "seventy-four billion, seven hundred thirty-one million, four hundred eight thousand, two hundred fifty-seven".