80954491439 has 2 divisors, whose sum is σ = 80954491440. Its totient is φ = 80954491438.

The previous prime is 80954491379. The next prime is 80954491447. The reversal of 80954491439 is 93419445908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80954491439 - 2²⁰ = 80953442863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80954491139) 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 as a sum of consecutive naturals, namely, 40477245719 + 40477245720.

It is an arithmetic number, because the mean of its divisors is an integer number (40477245720).

Almost surely, 2^80954491439 is an apocalyptic number.

80954491439 is a deficient number, since it is larger than the sum of its proper divisors (1).

80954491439 is an equidigital number, since it uses as much as digits as its factorization.

80954491439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 80954491439 in words is "eighty billion, nine hundred fifty-four million, four hundred ninety-one thousand, four hundred thirty-nine".