80172191722 has 24 divisors (see below), whose sum is σ = 147255049440. Its totient is φ = 32551114680.

The previous prime is 80172191719. The next prime is 80172191747. The reversal of 80172191722 is 22719127108.

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 11 ways as a sum of consecutive naturals, for example, 21526654 + ... + 21530377.

It is an arithmetic number, because the mean of its divisors is an integer number (6135627060).

Almost surely, 2^80172191722 is an apocalyptic number.

80172191722 is a deficient number, since it is larger than the sum of its proper divisors (67082857718).

80172191722 is a wasteful number, since it uses less digits than its factorization.

80172191722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43057066 (or 43057059 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 80172191722 in words is "eighty billion, one hundred seventy-two million, one hundred ninety-one thousand, seven hundred twenty-two".