2765131161 has 16 divisors (see below), whose sum is σ = 4179416640. Its totient is φ = 1612059840.

The previous prime is 2765131151. The next prime is 2765131163. The reversal of 2765131161 is 1611315672.

It is not a de Polignac number, because 2765131161 - 2⁶ = 2765131097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2765131163) 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, 1865070 + ... + 1866551.

It is an arithmetic number, because the mean of its divisors is an integer number (261213540).

Almost surely, 2^2765131161 is an apocalyptic number.

It is an amenable number.

2765131161 is a deficient number, since it is larger than the sum of its proper divisors (1414285479).

2765131161 is a wasteful number, since it uses less digits than its factorization.

2765131161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731656.

The product of its digits is 7560, while the sum is 33.

The square root of 2765131161 is about 52584.5144600575. The cubic root of 2765131161 is about 1403.5845491790.

The spelling of 2765131161 in words is "two billion, seven hundred sixty-five million, one hundred thirty-one thousand, one hundred sixty-one".