636602040522422 has 16 divisors (see below), whose sum is σ = 1038538896271632. Its totient is φ = 290907253855200.

The previous prime is 636602040522389. The next prime is 636602040522431. The reversal of 636602040522422 is 224225040206636.

It is a super-2 number, since 2×636602040522422² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121211353148 + ... + 121211358399.

It is an arithmetic number, because the mean of its divisors is an integer number (64908681016977).

Almost surely, 2^{636602040522422} is an apocalyptic number.

636602040522422 is a deficient number, since it is larger than the sum of its proper divisors (401936855749210).

636602040522422 is a wasteful number, since it uses less digits than its factorization.

636602040522422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242422711663.

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 636602040522422 in words is "six hundred thirty-six trillion, six hundred two billion, forty million, five hundred twenty-two thousand, four hundred twenty-two".