8157972416 has 28 divisors (see below), whose sum is σ = 17660157720. Its totient is φ = 3708168960.

The previous prime is 8157972413. The next prime is 8157972467. The reversal of 8157972416 is 6142797518.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157972413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5793311 + ... + 5794718.

Almost surely, 2^8157972416 is an apocalyptic number.

It is an amenable number.

8157972416 is an abundant number, since it is smaller than the sum of its proper divisors (9502185304).

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

8157972416 is a wasteful number, since it uses less digits than its factorization.

8157972416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11588052 (or 11588042 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 8157972416 is about 90321.4947617675. The cubic root of 8157972416 is about 2013.0786559525.

The spelling of 8157972416 in words is "eight billion, one hundred fifty-seven million, nine hundred seventy-two thousand, four hundred sixteen".