637993259980 has 48 divisors (see below), whose sum is σ = 1342760154624. Its totient is φ = 254631384000.

The previous prime is 637993259963. The next prime is 637993260001. The reversal of 637993259980 is 89952399736.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17449999 + ... + 17486521.

It is an arithmetic number, because the mean of its divisors is an integer number (27974169888).

Almost surely, 2^637993259980 is an apocalyptic number.

It is an amenable number.

637993259980 is an abundant number, since it is smaller than the sum of its proper divisors (704766894644).

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

637993259980 is a wasteful number, since it uses less digits than its factorization.

637993259980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38446 (or 38444 counting only the distinct ones).

The product of its (nonzero) digits is 198404640, while the sum is 70.

The spelling of 637993259980 in words is "six hundred thirty-seven billion, nine hundred ninety-three million, two hundred fifty-nine thousand, nine hundred eighty".