80769615777 has 16 divisors (see below), whose sum is σ = 120048470080. Its totient is φ = 53671009536.

The previous prime is 80769615749. The next prime is 80769615779. The reversal of 80769615777 is 77751696708.

80769615777 is a `hidden beast` number, since 8 + 0 + 7 + 6 + 9 + 615 + 7 + 7 + 7 = 666.

It is not a de Polignac number, because 80769615777 - 2²⁸ = 80501180321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80769615779) 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 in 15 ways as a sum of consecutive naturals, for example, 4863808 + ... + 4880385.

It is an arithmetic number, because the mean of its divisors is an integer number (7503029380).

Almost surely, 2^80769615777 is an apocalyptic number.

It is an amenable number.

80769615777 is a deficient number, since it is larger than the sum of its proper divisors (39278854303).

80769615777 is a wasteful number, since it uses less digits than its factorization.

80769615777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9744509 (or 9744503 counting only the distinct ones).

The product of its (nonzero) digits is 31116960, while the sum is 63.

The spelling of 80769615777 in words is "eighty billion, seven hundred sixty-nine million, six hundred fifteen thousand, seven hundred seventy-seven".