163688870108 has 12 divisors (see below), whose sum is σ = 298910110800. Its totient is φ = 78285981312.

The previous prime is 163688870089. The next prime is 163688870153. The reversal of 163688870108 is 801078886361.

It is a congruent number.

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, 889613333 + ... + 889613516.

It is an arithmetic number, because the mean of its divisors is an integer number (24909175900).

Almost surely, 2^163688870108 is an apocalyptic number.

It is an amenable number.

163688870108 is a deficient number, since it is larger than the sum of its proper divisors (135221240692).

163688870108 is a wasteful number, since it uses less digits than its factorization.

163688870108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779226876 (or 1779226874 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 163688870108 in words is "one hundred sixty-three billion, six hundred eighty-eight million, eight hundred seventy thousand, one hundred eight".