65013370911865 has 4 divisors (see below), whose sum is σ = 78016045094244. Its totient is φ = 52010696729488.

The previous prime is 65013370911857. The next prime is 65013370911899. The reversal of 65013370911865 is 56811907331056.

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 39825388861696 + 25187982050169 = 6310736^2 + 5018763^2 .

It is a cyclic number.

It is not a de Polignac number, because 65013370911865 - 2³ = 65013370911857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6501337091182 + ... + 6501337091191.

It is an arithmetic number, because the mean of its divisors is an integer number (19504011273561).

Almost surely, 2^{65013370911865} is an apocalyptic number.

It is an amenable number.

65013370911865 is a deficient number, since it is larger than the sum of its proper divisors (13002674182379).

65013370911865 is a wasteful number, since it uses less digits than its factorization.

65013370911865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13002674182378.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 65013370911865 in words is "sixty-five trillion, thirteen billion, three hundred seventy million, nine hundred eleven thousand, eight hundred sixty-five".