80129444972 has 12 divisors (see below), whose sum is σ = 142201550736. Its totient is φ = 39500430480.

The previous prime is 80129444959. The next prime is 80129444977. The reversal of 80129444972 is 27944492108.

It is a self number, because there is not a number n which added to its sum of digits gives 80129444972.

It is not an unprimeable number, because it can be changed into a prime (80129444977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141072683 + ... + 141073250.

It is an arithmetic number, because the mean of its divisors is an integer number (11850129228).

Almost surely, 2^80129444972 is an apocalyptic number.

It is an amenable number.

80129444972 is a deficient number, since it is larger than the sum of its proper divisors (62072105764).

80129444972 is a wasteful number, since it uses less digits than its factorization.

80129444972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282146008 (or 282146006 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 80129444972 in words is "eighty billion, one hundred twenty-nine million, four hundred forty-four thousand, nine hundred seventy-two".