7813516161 has 16 divisors (see below), whose sum is σ = 11482285248. Its totient is φ = 4686643200.

The previous prime is 7813516153. The next prime is 7813516187. The reversal of 7813516161 is 1616153187.

It is not a de Polignac number, because 7813516161 - 2³ = 7813516153 is a prime.

It is a super-2 number, since 2×7813516161² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7813516141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1217280 + ... + 1223681.

It is an arithmetic number, because the mean of its divisors is an integer number (717642828).

Almost surely, 2^7813516161 is an apocalyptic number.

It is an amenable number.

7813516161 is a deficient number, since it is larger than the sum of its proper divisors (3668769087).

7813516161 is a wasteful number, since it uses less digits than its factorization.

7813516161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441072.

The product of its digits is 30240, while the sum is 39.

The square root of 7813516161 is about 88394.0957360841. The cubic root of 7813516161 is about 1984.3373408328.

The spelling of 7813516161 in words is "seven billion, eight hundred thirteen million, five hundred sixteen thousand, one hundred sixty-one".