80785639267 has 2 divisors, whose sum is σ = 80785639268. Its totient is φ = 80785639266.

The previous prime is 80785639243. The next prime is 80785639303. The reversal of 80785639267 is 76293658708.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80785639267 is a prime.

It is not a weakly prime, because it can be changed into another prime (80785639217) 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, 40392819633 + 40392819634.

It is an arithmetic number, because the mean of its divisors is an integer number (40392819634).

Almost surely, 2^80785639267 is an apocalyptic number.

80785639267 is a deficient number, since it is larger than the sum of its proper divisors (1).

80785639267 is an equidigital number, since it uses as much as digits as its factorization.

80785639267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 80785639267 in words is "eighty billion, seven hundred eighty-five million, six hundred thirty-nine thousand, two hundred sixty-seven".