2656123264 has 32 divisors (see below), whose sum is σ = 5311682640. Its totient is φ = 1322995200.

The previous prime is 2656123229. The next prime is 2656123289. The reversal of 2656123264 is 4623216562.

It is a tau number, because it is divible by the number of its divisors (32).

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 in 3 ways as a sum of consecutive naturals, for example, 5787 + ... + 73114.

Almost surely, 2^2656123264 is an apocalyptic number.

It is an amenable number.

2656123264 is a deficient number, since it is larger than the sum of its proper divisors (2655559376).

2656123264 is an equidigital number, since it uses as much as digits as its factorization.

2656123264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79178 (or 79166 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 2656123264 is about 51537.5907857556. The cubic root of 2656123264 is about 1384.8925379833.

The spelling of 2656123264 in words is "two billion, six hundred fifty-six million, one hundred twenty-three thousand, two hundred sixty-four".