80877185099 has 2 divisors, whose sum is σ = 80877185100. Its totient is φ = 80877185098.

The previous prime is 80877185087. The next prime is 80877185159. The reversal of 80877185099 is 99058177808.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80877185099 - 2³⁶ = 12157708363 is a prime.

It is a super-2 number, since 2×80877185099² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (80877185299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40438592549 + 40438592550.

It is an arithmetic number, because the mean of its divisors is an integer number (40438592550).

Almost surely, 2^80877185099 is an apocalyptic number.

80877185099 is a deficient number, since it is larger than the sum of its proper divisors (1).

80877185099 is an equidigital number, since it uses as much as digits as its factorization.

80877185099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 62.

The spelling of 80877185099 in words is "eighty billion, eight hundred seventy-seven million, one hundred eighty-five thousand, ninety-nine".