21736483056 has 80 divisors (see below), whose sum is σ = 65675558400. Its totient is φ = 6864149952.

The previous prime is 21736483039. The next prime is 21736483073. The reversal of 21736483056 is 65038463712.

It is an interprime number because it is at equal distance from previous prime (21736483039) and next prime (21736483073).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1315896 + ... + 1332311.

It is an arithmetic number, because the mean of its divisors is an integer number (820944480).

Almost surely, 2^21736483056 is an apocalyptic number.

It is an amenable number.

21736483056 is an abundant number, since it is smaller than the sum of its proper divisors (43939075344).

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

21736483056 is a wasteful number, since it uses less digits than its factorization.

21736483056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648243 (or 2648231 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 21736483056 in words is "twenty-one billion, seven hundred thirty-six million, four hundred eighty-three thousand, fifty-six".