2775331161 has 8 divisors (see below), whose sum is σ = 4111601760. Its totient is φ = 1850220756.

The previous prime is 2775331099. The next prime is 2775331201. The reversal of 2775331161 is 1611335772.

2775331161 is a `hidden beast` number, since 2 + 7 + 7 + 533 + 116 + 1 = 666.

It is not a de Polignac number, because 2775331161 - 2⁷ = 2775331033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2775331561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51394995 + ... + 51395048.

It is an arithmetic number, because the mean of its divisors is an integer number (513950220).

Almost surely, 2^2775331161 is an apocalyptic number.

It is an amenable number.

2775331161 is a deficient number, since it is larger than the sum of its proper divisors (1336270599).

2775331161 is a wasteful number, since it uses less digits than its factorization.

2775331161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102790052 (or 102790046 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 2775331161 is about 52681.4119116031. The cubic root of 2775331161 is about 1405.3082763054.

The spelling of 2775331161 in words is "two billion, seven hundred seventy-five million, three hundred thirty-one thousand, one hundred sixty-one".