800080008779 has 2 divisors, whose sum is σ = 800080008780. Its totient is φ = 800080008778.

The previous prime is 800080008757. The next prime is 800080008829. The reversal of 800080008779 is 977800080008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800080008779 - 2¹² = 800080004683 is a prime.

It is not a weakly prime, because it can be changed into another prime (800080008379) 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, 400040004389 + 400040004390.

It is an arithmetic number, because the mean of its divisors is an integer number (400040004390).

Almost surely, 2^800080008779 is an apocalyptic number.

800080008779 is a deficient number, since it is larger than the sum of its proper divisors (1).

800080008779 is an equidigital number, since it uses as much as digits as its factorization.

800080008779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 800080008779 in words is "eight hundred billion, eighty million, eight thousand, seven hundred seventy-nine".