2681565255 has 24 divisors (see below), whose sum is σ = 4797985920. Its totient is φ = 1384032960.

The previous prime is 2681565241. The next prime is 2681565287. The reversal of 2681565255 is 5525651862.

2681565255 is a `hidden beast` number, since 2 + 6 + 81 + 565 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 2681565255 - 2²⁰ = 2680516679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2681565255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 959740 + ... + 962529.

It is an arithmetic number, because the mean of its divisors is an integer number (199916080).

Almost surely, 2^2681565255 is an apocalyptic number.

2681565255 is a deficient number, since it is larger than the sum of its proper divisors (2116420665).

2681565255 is a wasteful number, since it uses less digits than its factorization.

2681565255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922311 (or 1922308 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 2681565255 is about 51783.8319845104. The cubic root of 2681565255 is about 1389.3002801231.

The spelling of 2681565255 in words is "two billion, six hundred eighty-one million, five hundred sixty-five thousand, two hundred fifty-five".