21560922482 has 18 divisors (see below), whose sum is σ = 35552560239. Its totient is φ = 9799381020.

The previous prime is 21560922433. The next prime is 21560922497. The reversal of 21560922482 is 28422906512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10780461241 + 10780461241 = 103829^2 + 103829^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=103829.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 2279519 + ... + 2288957.

Almost surely, 2^21560922482 is an apocalyptic number.

21560922482 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21560922482 is a deficient number, since it is larger than the sum of its proper divisors (13991637757).

21560922482 is an frugal number, since it uses more digits than its factorization.

21560922482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18902 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 21560922482 in words is "twenty-one billion, five hundred sixty million, nine hundred twenty-two thousand, four hundred eighty-two".