80889697680 has 320 divisors, whose sum is σ = 289580037120. Its totient is φ = 18492364800.

The previous prime is 80889697663. The next prime is 80889697751. The reversal of 80889697680 is 8679698808.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3279795 + ... + 3304365.

It is an arithmetic number, because the mean of its divisors is an integer number (904937616).

Almost surely, 2^80889697680 is an apocalyptic number.

80889697680 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 80889697680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144790018560).

80889697680 is an abundant number, since it is smaller than the sum of its proper divisors (208690339440).

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

80889697680 is a wasteful number, since it uses less digits than its factorization.

80889697680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24670 (or 24664 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 69.

The spelling of 80889697680 in words is "eighty billion, eight hundred eighty-nine million, six hundred ninety-seven thousand, six hundred eighty".