80129072464 has 80 divisors (see below), whose sum is σ = 179417766528. Its totient is φ = 33956683776.

The previous prime is 80129072347. The next prime is 80129072477. The reversal of 80129072464 is 46427092108.

It is a self number, because there is not a number n which added to its sum of digits gives 80129072464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15565539 + ... + 15570685.

Almost surely, 2^80129072464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80129072464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89708883264).

80129072464 is an abundant number, since it is smaller than the sum of its proper divisors (99288694064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80129072464 is a wasteful number, since it uses less digits than its factorization.

80129072464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692 (or 6686 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 80129072464 in words is "eighty billion, one hundred twenty-nine million, seventy-two thousand, four hundred sixty-four".