80665685313 has 4 divisors (see below), whose sum is σ = 107554247088. Its totient is φ = 53777123540.

The previous prime is 80665685297. The next prime is 80665685327. The reversal of 80665685313 is 31358656608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80665685313 - 2⁴ = 80665685297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80665685393) 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, 13444280883 + ... + 13444280888.

It is an arithmetic number, because the mean of its divisors is an integer number (26888561772).

Almost surely, 2^80665685313 is an apocalyptic number.

It is an amenable number.

80665685313 is a deficient number, since it is larger than the sum of its proper divisors (26888561775).

80665685313 is a wasteful number, since it uses less digits than its factorization.

80665685313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26888561774.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 80665685313 in words is "eighty billion, six hundred sixty-five million, six hundred eighty-five thousand, three hundred thirteen".