21583932708 has 48 divisors (see below), whose sum is σ = 54475565760. Its totient is φ = 6611942784.

The previous prime is 21583932697. The next prime is 21583932719. The reversal of 21583932708 is 80723938512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21583932697) and next prime (21583932719).

It is a super-2 number, since 2×21583932708² (a number of 21 digits) contains 22 as substring.

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, 269343 + ... + 340166.

It is an arithmetic number, because the mean of its divisors is an integer number (1134907620).

Almost surely, 2^21583932708 is an apocalyptic number.

It is an amenable number.

21583932708 is an abundant number, since it is smaller than the sum of its proper divisors (32891633052).

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

21583932708 is a wasteful number, since it uses less digits than its factorization.

21583932708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609756 (or 609754 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 21583932708 in words is "twenty-one billion, five hundred eighty-three million, nine hundred thirty-two thousand, seven hundred eight".