5643521256 has 32 divisors (see below), whose sum is σ = 14278793760. Its totient is φ = 1858508352.

The previous prime is 5643521171. The next prime is 5643521281. The reversal of 5643521256 is 6521253465.

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 7 ways as a sum of consecutive naturals, for example, 1414555 + ... + 1418538.

It is an arithmetic number, because the mean of its divisors is an integer number (446212305).

Almost surely, 2^5643521256 is an apocalyptic number.

It is an amenable number.

5643521256 is an abundant number, since it is smaller than the sum of its proper divisors (8635272504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5643521256 is a wasteful number, since it uses less digits than its factorization.

5643521256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833185 (or 2833181 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 5643521256 is about 75123.3735664207. The cubic root of 5643521256 is about 1780.3964584228.

The spelling of 5643521256 in words is "five billion, six hundred forty-three million, five hundred twenty-one thousand, two hundred fifty-six".