636345074388 has 96 divisors (see below), whose sum is σ = 1538239610880. Its totient is φ = 204589445760.

The previous prime is 636345074311. The next prime is 636345074501. The reversal of 636345074388 is 883470543636.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23650423 + ... + 23677313.

It is an arithmetic number, because the mean of its divisors is an integer number (16023329280).

Almost surely, 2^636345074388 is an apocalyptic number.

It is an amenable number.

636345074388 is an abundant number, since it is smaller than the sum of its proper divisors (901894536492).

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

636345074388 is a wasteful number, since it uses less digits than its factorization.

636345074388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27397 (or 27395 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 57.

The spelling of 636345074388 in words is "six hundred thirty-six billion, three hundred forty-five million, seventy-four thousand, three hundred eighty-eight".