8136972568 has 32 divisors (see below), whose sum is σ = 15928869600. Its totient is φ = 3889467648.

The previous prime is 8136972563. The next prime is 8136972583. The reversal of 8136972568 is 8652796318.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136972563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355618 + ... + 377806.

It is an arithmetic number, because the mean of its divisors is an integer number (497777175).

Almost surely, 2^8136972568 is an apocalyptic number.

It is an amenable number.

8136972568 is a deficient number, since it is larger than the sum of its proper divisors (7791897032).

8136972568 is a wasteful number, since it uses less digits than its factorization.

8136972568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24211 (or 24207 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 8136972568 is about 90205.1692975519. The cubic root of 8136972568 is about 2011.3498492875.

The spelling of 8136972568 in words is "eight billion, one hundred thirty-six million, nine hundred seventy-two thousand, five hundred sixty-eight".