2656253643 has 16 divisors (see below), whose sum is σ = 3638880000. Its totient is φ = 1722270816.

The previous prime is 2656253609. The next prime is 2656253651. The reversal of 2656253643 is 3463526562.

It is not a de Polignac number, because 2656253643 - 2²⁸ = 2387818187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2656253595 and 2656253604.

It is not an unprimeable number, because it can be changed into a prime (2656258643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528858 + ... + 533856.

It is an arithmetic number, because the mean of its divisors is an integer number (227430000).

Almost surely, 2^2656253643 is an apocalyptic number.

2656253643 is a deficient number, since it is larger than the sum of its proper divisors (982626357).

2656253643 is a wasteful number, since it uses less digits than its factorization.

2656253643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826.

The product of its digits is 777600, while the sum is 42.

The square root of 2656253643 is about 51538.8556624999. The cubic root of 2656253643 is about 1384.9151973170.

The spelling of 2656253643 in words is "two billion, six hundred fifty-six million, two hundred fifty-three thousand, six hundred forty-three".