8157900577 has 4 divisors (see below), whose sum is σ = 8171123076. Its totient is φ = 8144678080.

The previous prime is 8157900557. The next prime is 8157900581. The reversal of 8157900577 is 7750097518.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3167325841 + 4990574736 = 56279^2 + 70644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8157900577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8157900577.

It is not an unprimeable number, because it can be changed into a prime (8157900547) 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, 6610324 + ... + 6611557.

It is an arithmetic number, because the mean of its divisors is an integer number (2042780769).

Almost surely, 2^8157900577 is an apocalyptic number.

It is an amenable number.

8157900577 is a deficient number, since it is larger than the sum of its proper divisors (13222499).

8157900577 is a wasteful number, since it uses less digits than its factorization.

8157900577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13222498.

The product of its (nonzero) digits is 617400, while the sum is 49.

The square root of 8157900577 is about 90321.0970759324. The cubic root of 8157900577 is about 2013.0727468870.

The spelling of 8157900577 in words is "eight billion, one hundred fifty-seven million, nine hundred thousand, five hundred seventy-seven".