80857373100 has 144 divisors (see below), whose sum is σ = 267866355456. Its totient is φ = 18447264000.

The previous prime is 80857373087. The next prime is 80857373137. The reversal of 80857373100 is 137375808.

It is a super-2 number, since 2×80857373100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1100515 + ... + 1171685.

It is an arithmetic number, because the mean of its divisors is an integer number (1860183024).

Almost surely, 2^80857373100 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 80857373100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133933177728).

80857373100 is an abundant number, since it is smaller than the sum of its proper divisors (187008982356).

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

80857373100 is a wasteful number, since it uses less digits than its factorization.

80857373100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71736 (or 71729 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 80857373100 in words is "eighty billion, eight hundred fifty-seven million, three hundred seventy-three thousand, one hundred".