65715002809 has 16 divisors (see below), whose sum is σ = 68072030208. Its totient is φ = 63389293632.

The previous prime is 65715002699. The next prime is 65715002819. The reversal of 65715002809 is 90820051756.

It is a cyclic number.

It is not a de Polignac number, because 65715002809 - 2²⁵ = 65681448377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65715002819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7687992 + ... + 7696534.

It is an arithmetic number, because the mean of its divisors is an integer number (4254501888).

Almost surely, 2^65715002809 is an apocalyptic number.

It is an amenable number.

65715002809 is a deficient number, since it is larger than the sum of its proper divisors (2357027399).

65715002809 is a wasteful number, since it uses less digits than its factorization.

65715002809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10344.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 65715002809 in words is "sixty-five billion, seven hundred fifteen million, two thousand, eight hundred nine".