102688038108 has 72 divisors (see below), whose sum is σ = 261044784000. Its totient is φ = 34035430176.

The previous prime is 102688038091. The next prime is 102688038139. The reversal of 102688038108 is 801830886201.

102688038108 is a `hidden beast` number, since 1 + 0 + 268 + 8 + 0 + 381 + 0 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14173935 + ... + 14181177.

It is an arithmetic number, because the mean of its divisors is an integer number (3625622000).

Almost surely, 2^102688038108 is an apocalyptic number.

102688038108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

102688038108 is an abundant number, since it is smaller than the sum of its proper divisors (158356745892).

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

102688038108 is a wasteful number, since it uses less digits than its factorization.

102688038108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431 (or 9426 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 102688038108 in words is "one hundred two billion, six hundred eighty-eight million, thirty-eight thousand, one hundred eight".