2656121252 has 24 divisors (see below), whose sum is σ = 4869379200. Its totient is φ = 1266029856.

The previous prime is 2656121249. The next prime is 2656121287. The reversal of 2656121252 is 2521216562.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135758 + ... + 154085.

It is an arithmetic number, because the mean of its divisors is an integer number (202890800).

Almost surely, 2^2656121252 is an apocalyptic number.

It is an amenable number.

2656121252 is a deficient number, since it is larger than the sum of its proper divisors (2213257948).

2656121252 is a wasteful number, since it uses less digits than its factorization.

2656121252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289955 (or 289953 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 2656121252 is about 51537.5712660191. The cubic root of 2656121252 is about 1384.8921883002.

The spelling of 2656121252 in words is "two billion, six hundred fifty-six million, one hundred twenty-one thousand, two hundred fifty-two".