80015857872 has 80 divisors (see below), whose sum is σ = 211994669568. Its totient is φ = 25992570240.

The previous prime is 80015857813. The next prime is 80015857937. The reversal of 80015857872 is 27875851008.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870597 + ... + 958107.

Almost surely, 2^80015857872 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 80015857872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105997334784).

80015857872 is an abundant number, since it is smaller than the sum of its proper divisors (131978811696).

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

80015857872 is a wasteful number, since it uses less digits than its factorization.

80015857872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88008 (or 88002 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 51.

The spelling of 80015857872 in words is "eighty billion, fifteen million, eight hundred fifty-seven thousand, eight hundred seventy-two".