8152857864 has 96 divisors (see below), whose sum is σ = 22488710400. Its totient is φ = 2667732480.

The previous prime is 8152857859. The next prime is 8152857887. The reversal of 8152857864 is 4687582518.

8152857864 is a `hidden beast` number, since 8 + 1 + 5 + 2 + 8 + 578 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8152857864.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1218432 + ... + 1225104.

It is an arithmetic number, because the mean of its divisors is an integer number (234257400).

Almost surely, 2^8152857864 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 8152857864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11244355200).

8152857864 is an abundant number, since it is smaller than the sum of its proper divisors (14335852536).

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

8152857864 is a wasteful number, since it uses less digits than its factorization.

8152857864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995 (or 6988 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 8152857864 is about 90293.1772837793. The cubic root of 8152857864 is about 2012.6578754226.

The spelling of 8152857864 in words is "eight billion, one hundred fifty-two million, eight hundred fifty-seven thousand, eight hundred sixty-four".