80776674697 has 2 divisors, whose sum is σ = 80776674698. Its totient is φ = 80776674696.

The previous prime is 80776674661. The next prime is 80776674701. The reversal of 80776674697 is 79647667708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49909347216 + 30867327481 = 223404^2 + 175691^2 .

It is a cyclic number.

It is not a de Polignac number, because 80776674697 - 2⁷ = 80776674569 is a prime.

It is not a weakly prime, because it can be changed into another prime (80776674637) 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, 40388337348 + 40388337349.

It is an arithmetic number, because the mean of its divisors is an integer number (40388337349).

Almost surely, 2^80776674697 is an apocalyptic number.

It is an amenable number.

80776674697 is a deficient number, since it is larger than the sum of its proper divisors (1).

80776674697 is an equidigital number, since it uses as much as digits as its factorization.

80776674697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 149361408, while the sum is 67.

The spelling of 80776674697 in words is "eighty billion, seven hundred seventy-six million, six hundred seventy-four thousand, six hundred ninety-seven".