2564371161 has 12 divisors (see below), whose sum is σ = 4040827440. Its totient is φ = 1554164280.

The previous prime is 2564371153. The next prime is 2564371193. The reversal of 2564371161 is 1611734652.

2564371161 is a `hidden beast` number, since 2 + 5 + 643 + 7 + 1 + 1 + 6 + 1 = 666.

2564371161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2564371161 - 2³ = 2564371153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2564371111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12951271 + ... + 12951468.

It is an arithmetic number, because the mean of its divisors is an integer number (336735620).

Almost surely, 2^2564371161 is an apocalyptic number.

It is an amenable number.

2564371161 is a deficient number, since it is larger than the sum of its proper divisors (1476456279).

2564371161 is a wasteful number, since it uses less digits than its factorization.

2564371161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25902756 (or 25902753 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2564371161 is about 50639.6204665872. The cubic root of 2564371161 is about 1368.7589167118.

The spelling of 2564371161 in words is "two billion, five hundred sixty-four million, three hundred seventy-one thousand, one hundred sixty-one".