636740070522 has 32 divisors (see below), whose sum is σ = 1349960644800. Its totient is φ = 199529011968.

The previous prime is 636740070481. The next prime is 636740070557. The reversal of 636740070522 is 225070047636.

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 15 ways as a sum of consecutive naturals, for example, 3545997 + ... + 3721232.

It is an arithmetic number, because the mean of its divisors is an integer number (42186270150).

Almost surely, 2^636740070522 is an apocalyptic number.

636740070522 is an abundant number, since it is smaller than the sum of its proper divisors (713220574278).

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

636740070522 is a wasteful number, since it uses less digits than its factorization.

636740070522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7268110.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 636740070522 in words is "six hundred thirty-six billion, seven hundred forty million, seventy thousand, five hundred twenty-two".