80939256879 has 16 divisors (see below), whose sum is σ = 116288020352. Its totient is φ = 49779823968.

The previous prime is 80939256863. The next prime is 80939256883. The reversal of 80939256879 is 97865293908.

It is not a de Polignac number, because 80939256879 - 2⁴ = 80939256863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80939256859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535057 + ... + 669450.

It is an arithmetic number, because the mean of its divisors is an integer number (7268001272).

Almost surely, 2^80939256879 is an apocalyptic number.

80939256879 is a deficient number, since it is larger than the sum of its proper divisors (35348763473).

80939256879 is a wasteful number, since it uses less digits than its factorization.

80939256879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206246.

The product of its (nonzero) digits is 58786560, while the sum is 66.

The spelling of 80939256879 in words is "eighty billion, nine hundred thirty-nine million, two hundred fifty-six thousand, eight hundred seventy-nine".