80687938851 has 24 divisors (see below), whose sum is σ = 129842665680. Its totient is φ = 47941903296.

The previous prime is 80687938843. The next prime is 80687938889. The reversal of 80687938851 is 15883978608.

80687938851 is a `hidden beast` number, since 80 + 68 + 79 + 388 + 51 = 666.

It is not a de Polignac number, because 80687938851 - 2³ = 80687938843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80687938651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11886961 + ... + 11893746.

It is an arithmetic number, because the mean of its divisors is an integer number (5410111070).

Almost surely, 2^80687938851 is an apocalyptic number.

80687938851 is a deficient number, since it is larger than the sum of its proper divisors (49154726829).

80687938851 is a wasteful number, since it uses less digits than its factorization.

80687938851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23780755 (or 23780752 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 80687938851 in words is "eighty billion, six hundred eighty-seven million, nine hundred thirty-eight thousand, eight hundred fifty-one".