8157808688 has 30 divisors (see below), whose sum is σ = 16681431204. Its totient is φ = 3864222432.

The previous prime is 8157808667. The next prime is 8157808691. The reversal of 8157808688 is 8868087518.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 700406 + ... + 711957.

Almost surely, 2^8157808688 is an apocalyptic number.

It is an amenable number.

8157808688 is an abundant number, since it is smaller than the sum of its proper divisors (8523622516).

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

8157808688 is a wasteful number, since it uses less digits than its factorization.

8157808688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412409 (or 1412384 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 59.

The square root of 8157808688 is about 90320.5883948948. The cubic root of 8157808688 is about 2013.0651885724.

The spelling of 8157808688 in words is "eight billion, one hundred fifty-seven million, eight hundred eight thousand, six hundred eighty-eight".