73999999980 has 96 divisors (see below), whose sum is σ = 230263857600. Its totient is φ = 19729764864.

The previous prime is 73999999949. The next prime is 73999999981. The reversal of 73999999980 is 8999999937.

It is a self number, because there is not a number n which added to its sum of digits gives 73999999980.

It is not an unprimeable number, because it can be changed into a prime (73999999981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4489434 + ... + 4505886.

It is an arithmetic number, because the mean of its divisors is an integer number (2398581850).

Almost surely, 2^73999999980 is an apocalyptic number.

It is an amenable number.

73999999980 is an abundant number, since it is smaller than the sum of its proper divisors (156263857620).

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

73999999980 is a wasteful number, since it uses less digits than its factorization.

73999999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24800 (or 24792 counting only the distinct ones).

The product of its (nonzero) digits is 803538792, while the sum is 81.

The spelling of 73999999980 in words is "seventy-three billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty".