108636631556 has 12 divisors (see below), whose sum is σ = 194535363792. Its totient is φ = 53055099048.

The previous prime is 108636631529. The next prime is 108636631591. The reversal of 108636631556 is 655136636801.

It is a super-2 number, since 2×108636631556² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315803990 + ... + 315804333.

It is an arithmetic number, because the mean of its divisors is an integer number (16211280316).

Almost surely, 2^108636631556 is an apocalyptic number.

It is an amenable number.

108636631556 is a deficient number, since it is larger than the sum of its proper divisors (85898732236).

108636631556 is a wasteful number, since it uses less digits than its factorization.

108636631556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631608370 (or 631608368 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 108636631556 in words is "one hundred eight billion, six hundred thirty-six million, six hundred thirty-one thousand, five hundred fifty-six".