80502131078 has 32 divisors (see below), whose sum is σ = 125477068800. Its totient is φ = 38694348000.

The previous prime is 80502131071. The next prime is 80502131081. The reversal of 80502131078 is 87013120508.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80502131071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8150483 + ... + 8160353.

It is an arithmetic number, because the mean of its divisors is an integer number (3921158400).

Almost surely, 2^80502131078 is an apocalyptic number.

80502131078 is a deficient number, since it is larger than the sum of its proper divisors (44974937722).

80502131078 is a wasteful number, since it uses less digits than its factorization.

80502131078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10764.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 80502131078 in words is "eighty billion, five hundred two million, one hundred thirty-one thousand, seventy-eight".