80862098509 has 2 divisors, whose sum is σ = 80862098510. Its totient is φ = 80862098508.

The previous prime is 80862098501. The next prime is 80862098539. The reversal of 80862098509 is 90589026808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68290755625 + 12571342884 = 261325^2 + 112122^2 .

It is a cyclic number.

It is not a de Polignac number, because 80862098509 - 2³ = 80862098501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80862098509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80862098501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40431049254 + 40431049255.

It is an arithmetic number, because the mean of its divisors is an integer number (40431049255).

Almost surely, 2^80862098509 is an apocalyptic number.

It is an amenable number.

80862098509 is a deficient number, since it is larger than the sum of its proper divisors (1).

80862098509 is an equidigital number, since it uses as much as digits as its factorization.

80862098509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 80862098509 in words is "eighty billion, eight hundred sixty-two million, ninety-eight thousand, five hundred nine".