80129723879 has 2 divisors, whose sum is σ = 80129723880. Its totient is φ = 80129723878.

The previous prime is 80129723837. The next prime is 80129723887. The reversal of 80129723879 is 97832792108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80129723879 - 2³² = 75834756583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80129723279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40064861939 + 40064861940.

It is an arithmetic number, because the mean of its divisors is an integer number (40064861940).

Almost surely, 2^80129723879 is an apocalyptic number.

80129723879 is a deficient number, since it is larger than the sum of its proper divisors (1).

80129723879 is an equidigital number, since it uses as much as digits as its factorization.

80129723879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 80129723879 in words is "eighty billion, one hundred twenty-nine million, seven hundred twenty-three thousand, eight hundred seventy-nine".