102688512857 has 16 divisors (see below), whose sum is σ = 119131299840. Its totient is φ = 86689448208.

The previous prime is 102688512853. The next prime is 102688512907. The reversal of 102688512857 is 758215886201.

It is a cyclic number.

It is not a de Polignac number, because 102688512857 - 2² = 102688512853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102688512799 and 102688512808.

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 15 ways as a sum of consecutive naturals, for example, 3134918 + ... + 3167504.

It is an arithmetic number, because the mean of its divisors is an integer number (7445706240).

Almost surely, 2^102688512857 is an apocalyptic number.

It is an amenable number.

102688512857 is a deficient number, since it is larger than the sum of its proper divisors (16442786983).

102688512857 is an equidigital number, since it uses as much as digits as its factorization.

102688512857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39380.

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 102688512857 in words is "one hundred two billion, six hundred eighty-eight million, five hundred twelve thousand, eight hundred fifty-seven".