83921517320 has 64 divisors (see below), whose sum is σ = 197823859200. Its totient is φ = 32000855040.

The previous prime is 83921517269. The next prime is 83921517347. The reversal of 83921517320 is 2371512938.

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, 421985 + ... + 588144.

It is an arithmetic number, because the mean of its divisors is an integer number (3090997800).

Almost surely, 2^83921517320 is an apocalyptic number.

It is an amenable number.

83921517320 is an abundant number, since it is smaller than the sum of its proper divisors (113902341880).

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

83921517320 is a wasteful number, since it uses less digits than its factorization.

83921517320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010238 (or 1010234 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 83921517320 in words is "eighty-three billion, nine hundred twenty-one million, five hundred seventeen thousand, three hundred twenty".