80742481879 has 2 divisors, whose sum is σ = 80742481880. Its totient is φ = 80742481878.

The previous prime is 80742481849. The next prime is 80742481951. The reversal of 80742481879 is 97818424708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80742481879 - 2⁷ = 80742481751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80742481849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40371240939 + 40371240940.

It is an arithmetic number, because the mean of its divisors is an integer number (40371240940).

Almost surely, 2^80742481879 is an apocalyptic number.

80742481879 is a deficient number, since it is larger than the sum of its proper divisors (1).

80742481879 is an equidigital number, since it uses as much as digits as its factorization.

80742481879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7225344, while the sum is 58.

The spelling of 80742481879 in words is "eighty billion, seven hundred forty-two million, four hundred eighty-one thousand, eight hundred seventy-nine".