2791292665 has 16 divisors (see below), whose sum is σ = 3861940608. Its totient is φ = 1897088256.

The previous prime is 2791292657. The next prime is 2791292681. The reversal of 2791292665 is 5662921972.

It is not a de Polignac number, because 2791292665 - 2³ = 2791292657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348927 + ... + 356836.

It is an arithmetic number, because the mean of its divisors is an integer number (241371288).

Almost surely, 2^2791292665 is an apocalyptic number.

It is an amenable number.

2791292665 is a deficient number, since it is larger than the sum of its proper divisors (1070647943).

2791292665 is a wasteful number, since it uses less digits than its factorization.

2791292665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705888.

The product of its digits is 816480, while the sum is 49.

The square root of 2791292665 is about 52832.6855743677. The cubic root of 2791292665 is about 1407.9972009524.

The spelling of 2791292665 in words is "two billion, seven hundred ninety-one million, two hundred ninety-two thousand, six hundred sixty-five".