80699138784 has 240 divisors, whose sum is σ = 270168877440. Its totient is φ = 23390864640.

The previous prime is 80699138777. The next prime is 80699138797. The reversal of 80699138784 is 48783199608.

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, 594247 + ... + 717305.

It is an arithmetic number, because the mean of its divisors is an integer number (1125703656).

Almost surely, 2^80699138784 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 80699138784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135084438720).

80699138784 is an abundant number, since it is smaller than the sum of its proper divisors (189469738656).

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

80699138784 is a wasteful number, since it uses less digits than its factorization.

80699138784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123115 (or 123098 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 80699138784 in words is "eighty billion, six hundred ninety-nine million, one hundred thirty-eight thousand, seven hundred eighty-four".