80639578834 has 16 divisors (see below), whose sum is σ = 121463971200. Its totient is φ = 40151724624.

The previous prime is 80639578819. The next prime is 80639578879. The reversal of 80639578834 is 43887593608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1197637 + ... + 1263175.

It is an arithmetic number, because the mean of its divisors is an integer number (7591498200).

Almost surely, 2^80639578834 is an apocalyptic number.

80639578834 is a deficient number, since it is larger than the sum of its proper divisors (40824392366).

80639578834 is a wasteful number, since it uses less digits than its factorization.

80639578834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68097.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 80639578834 in words is "eighty billion, six hundred thirty-nine million, five hundred seventy-eight thousand, eight hundred thirty-four".