80599421317 has 2 divisors, whose sum is σ = 80599421318. Its totient is φ = 80599421316.

The previous prime is 80599421311. The next prime is 80599421389. The reversal of 80599421317 is 71312499508.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50406536196 + 30192885121 = 224514^2 + 173761^2 .

It is a cyclic number.

It is not a de Polignac number, because 80599421317 - 2²⁷ = 80465203589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80599421311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40299710658 + 40299710659.

It is an arithmetic number, because the mean of its divisors is an integer number (40299710659).

Almost surely, 2^80599421317 is an apocalyptic number.

It is an amenable number.

80599421317 is a deficient number, since it is larger than the sum of its proper divisors (1).

80599421317 is an equidigital number, since it uses as much as digits as its factorization.

80599421317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 80599421317 in words is "eighty billion, five hundred ninety-nine million, four hundred twenty-one thousand, three hundred seventeen".