8513375868 has 72 divisors (see below), whose sum is σ = 22356064640. Its totient is φ = 2728702080.

The previous prime is 8513375867. The next prime is 8513375869. The reversal of 8513375868 is 8685733158.

8513375868 is a `hidden beast` number, since 8 + 51 + 3 + 3 + 7 + 586 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (8513375867) and next prime (8513375869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8513375867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150918 + ... + 199506.

Almost surely, 2^8513375868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8513375868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11178032320).

8513375868 is an abundant number, since it is smaller than the sum of its proper divisors (13842688772).

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

8513375868 is a wasteful number, since it uses less digits than its factorization.

8513375868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48787 (or 48782 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 8513375868 is about 92267.9568864511. The cubic root of 8513375868 is about 2041.8974934498.

The spelling of 8513375868 in words is "eight billion, five hundred thirteen million, three hundred seventy-five thousand, eight hundred sixty-eight".