2566264856 has 8 divisors (see below), whose sum is σ = 4811746620. Its totient is φ = 1283132424.

The previous prime is 2566264829. The next prime is 2566264871. The reversal of 2566264856 is 6584626652.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2566264856² = 13171430622281401472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160391546 + ... + 160391561.

Almost surely, 2^2566264856 is an apocalyptic number.

It is an amenable number.

2566264856 is a deficient number, since it is larger than the sum of its proper divisors (2245481764).

2566264856 is a wasteful number, since it uses less digits than its factorization.

2566264856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320783113 (or 320783109 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The square root of 2566264856 is about 50658.3147765498. The cubic root of 2566264856 is about 1369.0957600651.

The spelling of 2566264856 in words is "two billion, five hundred sixty-six million, two hundred sixty-four thousand, eight hundred fifty-six".