2655616765 has 4 divisors (see below), whose sum is σ = 3186740124. Its totient is φ = 2124493408.

The previous prime is 2655616759. The next prime is 2655616819. The reversal of 2655616765 is 5676165562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5676165562 = 2 ⋅2838082781.

It can be written as a sum of positive squares in 2 ways, for example, as 437771929 + 2217844836 = 20923^2 + 47094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2655616765 - 2⁷ = 2655616637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265561672 + ... + 265561681.

It is an arithmetic number, because the mean of its divisors is an integer number (796685031).

Almost surely, 2^2655616765 is an apocalyptic number.

It is an amenable number.

2655616765 is a deficient number, since it is larger than the sum of its proper divisors (531123359).

2655616765 is an equidigital number, since it uses as much as digits as its factorization.

2655616765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531123358.

The product of its digits is 2268000, while the sum is 49.

The square root of 2655616765 is about 51532.6766721854. The cubic root of 2655616765 is about 1384.8045035051.

The spelling of 2655616765 in words is "two billion, six hundred fifty-five million, six hundred sixteen thousand, seven hundred sixty-five".