80898842309 has 2 divisors, whose sum is σ = 80898842310. Its totient is φ = 80898842308.

The previous prime is 80898842281. The next prime is 80898842317. The reversal of 80898842309 is 90324889808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80502712900 + 396129409 = 283730^2 + 19903^2 .

It is a cyclic number.

It is not a de Polignac number, because 80898842309 - 2²⁴ = 80882065093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80898842359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40449421154 + 40449421155.

It is an arithmetic number, because the mean of its divisors is an integer number (40449421155).

Almost surely, 2^80898842309 is an apocalyptic number.

It is an amenable number.

80898842309 is a deficient number, since it is larger than the sum of its proper divisors (1).

80898842309 is an equidigital number, since it uses as much as digits as its factorization.

80898842309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 80898842309 in words is "eighty billion, eight hundred ninety-eight million, eight hundred forty-two thousand, three hundred nine".