80658421056 has 280 divisors, whose sum is σ = 258106590720. Its totient is φ = 24829314048.

The previous prime is 80658421049. The next prime is 80658421069. The reversal of 80658421056 is 65012485608.

80658421056 is a `hidden beast` number, since 8 + 0 + 6 + 584 + 2 + 10 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3446065 + ... + 3469391.

Almost surely, 2^80658421056 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 80658421056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129053295360).

80658421056 is an abundant number, since it is smaller than the sum of its proper divisors (177448169664).

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

80658421056 is a wasteful number, since it uses less digits than its factorization.

80658421056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23403 (or 23384 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 80658421056 in words is "eighty billion, six hundred fifty-eight million, four hundred twenty-one thousand, fifty-six".