80172850680 has 1280 divisors, whose sum is σ = 331948108800. Its totient is φ = 17139548160.

The previous prime is 80172850643. The next prime is 80172850729. The reversal of 80172850680 is 8605827108.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 965937919 + ... + 965938001.

It is an arithmetic number, because the mean of its divisors is an integer number (259334460).

Almost surely, 2^80172850680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80172850680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165974054400).

80172850680 is an abundant number, since it is smaller than the sum of its proper divisors (251775258120).

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

80172850680 is a wasteful number, since it uses less digits than its factorization.

80172850680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 80172850680 in words is "eighty billion, one hundred seventy-two million, eight hundred fifty thousand, six hundred eighty".