80689722944 has 28 divisors (see below), whose sum is σ = 160139163084. Its totient is φ = 40339697664.

The previous prime is 80689722907. The next prime is 80689722973. The reversal of 80689722944 is 44922798608.

It can be written as a sum of positive squares in 2 ways, for example, as 55089722944 + 25600000000 = 234712^2 + 160000^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450344 + ... + 603480.

Almost surely, 2^80689722944 is an apocalyptic number.

It is an amenable number.

80689722944 is a deficient number, since it is larger than the sum of its proper divisors (79449440140).

80689722944 is a wasteful number, since it uses less digits than its factorization.

80689722944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161382 (or 161372 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 80689722944 in words is "eighty billion, six hundred eighty-nine million, seven hundred twenty-two thousand, nine hundred forty-four".