688160836380 has 24 divisors (see below), whose sum is σ = 1926850342032. Its totient is φ = 183509556352.

The previous prime is 688160836379. The next prime is 688160836399. The reversal of 688160836380 is 83638061886.

It is a happy number.

It is a super-2 number, since 2×688160836380² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 688160836380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5734673577 + ... + 5734673696.

It is an arithmetic number, because the mean of its divisors is an integer number (80285430918).

Almost surely, 2^688160836380 is an apocalyptic number.

688160836380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

688160836380 is an abundant number, since it is smaller than the sum of its proper divisors (1238689505652).

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

688160836380 is a wasteful number, since it uses less digits than its factorization.

688160836380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11469347285 (or 11469347283 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 688160836380 in words is "six hundred eighty-eight billion, one hundred sixty million, eight hundred thirty-six thousand, three hundred eighty".