102688512856 has 32 divisors (see below), whose sum is σ = 193176126000. Its totient is φ = 51174982656.

The previous prime is 102688512853. The next prime is 102688512907. The reversal of 102688512856 is 658215886201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102688512853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13635300 + ... + 13642828.

Almost surely, 2^102688512856 is an apocalyptic number.

It is an amenable number.

102688512856 is a deficient number, since it is larger than the sum of its proper divisors (90487613144).

102688512856 is a wasteful number, since it uses less digits than its factorization.

102688512856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12931 (or 12927 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 52.

The spelling of 102688512856 in words is "one hundred two billion, six hundred eighty-eight million, five hundred twelve thousand, eight hundred fifty-six".