21982261569348 has 24 divisors (see below), whose sum is σ = 51306219282528. Its totient is φ = 7325381148736.

The previous prime is 21982261569283. The next prime is 21982261569361. The reversal of 21982261569348 is 84396516228912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254876886 + ... + 254963117.

It is an arithmetic number, because the mean of its divisors is an integer number (2137759136772).

Almost surely, 2^{21982261569348} is an apocalyptic number.

It is an amenable number.

21982261569348 is an abundant number, since it is smaller than the sum of its proper divisors (29323957713180).

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

21982261569348 is a wasteful number, since it uses less digits than its factorization.

21982261569348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509843603 (or 509843601 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 66.

The spelling of 21982261569348 in words is "twenty-one trillion, nine hundred eighty-two billion, two hundred sixty-one million, five hundred sixty-nine thousand, three hundred forty-eight".