80604813689 has 4 divisors (see below), whose sum is σ = 80746474740. Its totient is φ = 80463152640.

The previous prime is 80604813671. The next prime is 80604813703. The reversal of 80604813689 is 98631840608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25238723689 + 55366090000 = 158867^2 + 235300^2 .

It is a cyclic number.

It is not a de Polignac number, because 80604813689 - 2⁸ = 80604813433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80604813689.

It is not an unprimeable number, because it can be changed into a prime (80604213689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70829672 + ... + 70830809.

It is an arithmetic number, because the mean of its divisors is an integer number (20186618685).

Almost surely, 2^80604813689 is an apocalyptic number.

It is an amenable number.

80604813689 is a deficient number, since it is larger than the sum of its proper divisors (141661051).

80604813689 is a wasteful number, since it uses less digits than its factorization.

80604813689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141661050.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 80604813689 in words is "eighty billion, six hundred four million, eight hundred thirteen thousand, six hundred eighty-nine".