74131756818 has 64 divisors (see below), whose sum is σ = 170803814400. Its totient is φ = 21010753152.

The previous prime is 74131756753. The next prime is 74131756819. The reversal of 74131756818 is 81865713147.

It is not an unprimeable number, because it can be changed into a prime (74131756819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9772255 + ... + 9779837.

It is an arithmetic number, because the mean of its divisors is an integer number (2668809600).

Almost surely, 2^74131756818 is an apocalyptic number.

74131756818 is an abundant number, since it is smaller than the sum of its proper divisors (96672057582).

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

74131756818 is a wasteful number, since it uses less digits than its factorization.

74131756818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9431.

The product of its digits is 1128960, while the sum is 51.

The spelling of 74131756818 in words is "seventy-four billion, one hundred thirty-one million, seven hundred fifty-six thousand, eight hundred eighteen".