636838374704 has 20 divisors (see below), whose sum is σ = 1410142115664. Its totient is φ = 272930731968.

The previous prime is 636838374703. The next prime is 636838374707. The reversal of 636838374704 is 407473838636.

It is not an unprimeable number, because it can be changed into a prime (636838374703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2843028347 + ... + 2843028570.

Almost surely, 2^636838374704 is an apocalyptic number.

It is an amenable number.

636838374704 is an abundant number, since it is smaller than the sum of its proper divisors (773303740960).

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

636838374704 is a wasteful number, since it uses less digits than its factorization.

636838374704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686056932 (or 5686056926 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 59.

The spelling of 636838374704 in words is "six hundred thirty-six billion, eight hundred thirty-eight million, three hundred seventy-four thousand, seven hundred four".