80572172012 has 12 divisors (see below), whose sum is σ = 141017637936. Its totient is φ = 40281418320.

The previous prime is 80572171997. The next prime is 80572172017. The reversal of 80572172012 is 21027127508.

It is a super-2 number, since 2×80572172012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80572172017) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1127939 + ... + 1197242.

It is an arithmetic number, because the mean of its divisors is an integer number (11751469828).

Almost surely, 2^80572172012 is an apocalyptic number.

It is an amenable number.

80572172012 is a deficient number, since it is larger than the sum of its proper divisors (60445465924).

80572172012 is a wasteful number, since it uses less digits than its factorization.

80572172012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333848 (or 2333846 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The spelling of 80572172012 in words is "eighty billion, five hundred seventy-two million, one hundred seventy-two thousand, twelve".