80687663992 has 128 divisors (see below), whose sum is σ = 180304911360. Its totient is φ = 33471313920.

The previous prime is 80687663963. The next prime is 80687664007. The reversal of 80687663992 is 29936678608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33465267 + ... + 33467677.

It is an arithmetic number, because the mean of its divisors is an integer number (1408632120).

Almost surely, 2^80687663992 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 80687663992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90152455680).

80687663992 is an abundant number, since it is smaller than the sum of its proper divisors (99617247368).

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

80687663992 is a wasteful number, since it uses less digits than its factorization.

80687663992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293 (or 3289 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 80687663992 in words is "eighty billion, six hundred eighty-seven million, six hundred sixty-three thousand, nine hundred ninety-two".