80317985280 has 320 divisors, whose sum is σ = 277215257088. Its totient is φ = 19720765440.

The previous prime is 80317985261. The next prime is 80317985309. The reversal of 80317985280 is 8258971308.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54012697 + ... + 54014183.

Almost surely, 2^80317985280 is an apocalyptic number.

80317985280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80317985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138607628544).

80317985280 is an abundant number, since it is smaller than the sum of its proper divisors (196897271808).

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

80317985280 is a wasteful number, since it uses less digits than its factorization.

80317985280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 80317985280 in words is "eighty billion, three hundred seventeen million, nine hundred eighty-five thousand, two hundred eighty".