7951564161 has 12 divisors (see below), whose sum is σ = 11486725120. Its totient is φ = 5300520120.

The previous prime is 7951564133. The next prime is 7951564193. The reversal of 7951564161 is 1614651597.

7951564161 is a `hidden beast` number, since 79 + 5 + 1 + 564 + 16 + 1 = 666.

7951564161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7951564161 - 2⁶ = 7951564097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7951564861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67776 + ... + 143166.

Almost surely, 2^7951564161 is an apocalyptic number.

It is an amenable number.

7951564161 is a deficient number, since it is larger than the sum of its proper divisors (3535160959).

7951564161 is a wasteful number, since it uses less digits than its factorization.

7951564161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87116 (or 87113 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 7951564161 is about 89171.5434485688. The cubic root of 7951564161 is about 1995.9555066333.

The spelling of 7951564161 in words is "seven billion, nine hundred fifty-one million, five hundred sixty-four thousand, one hundred sixty-one".