65115135815 has 16 divisors (see below), whose sum is σ = 79434495936. Its totient is φ = 51234720000.

The previous prime is 65115135713. The next prime is 65115135821. The reversal of 65115135815 is 51853151156.

It is not a de Polignac number, because 65115135815 - 2⁸ = 65115135559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 350702 + ... + 503211.

It is an arithmetic number, because the mean of its divisors is an integer number (4964655996).

Almost surely, 2^65115135815 is an apocalyptic number.

65115135815 is a deficient number, since it is larger than the sum of its proper divisors (14319360121).

65115135815 is a wasteful number, since it uses less digits than its factorization.

65115135815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854170.

The product of its digits is 90000, while the sum is 41.

The spelling of 65115135815 in words is "sixty-five billion, one hundred fifteen million, one hundred thirty-five thousand, eight hundred fifteen".