688136125125 has 16 divisors (see below), whose sum is σ = 1145058512832. Its totient is φ = 367005933200.

The previous prime is 688136125091. The next prime is 688136125141. The reversal of 688136125125 is 521521631886.

It is not a de Polignac number, because 688136125125 - 2²⁰ = 688135076549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917514459 + ... + 917515208.

It is an arithmetic number, because the mean of its divisors is an integer number (71566157052).

Almost surely, 2^688136125125 is an apocalyptic number.

It is an amenable number.

688136125125 is a deficient number, since it is larger than the sum of its proper divisors (456922387707).

688136125125 is a wasteful number, since it uses less digits than its factorization.

688136125125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835029685 (or 1835029675 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The spelling of 688136125125 in words is "six hundred eighty-eight billion, one hundred thirty-six million, one hundred twenty-five thousand, one hundred twenty-five".