65112356513 has 4 divisors (see below), whose sum is σ = 65123348160. Its totient is φ = 65101364868.

The previous prime is 65112356443. The next prime is 65112356549. The reversal of 65112356513 is 31565321156.

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 65112356513 - 2¹⁰ = 65112355489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65112356213) 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, 5486933 + ... + 5498786.

It is an arithmetic number, because the mean of its divisors is an integer number (16280837040).

Almost surely, 2^65112356513 is an apocalyptic number.

It is an amenable number.

65112356513 is a deficient number, since it is larger than the sum of its proper divisors (10991647).

65112356513 is a wasteful number, since it uses less digits than its factorization.

65112356513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10991646.

The product of its digits is 81000, while the sum is 38.

Adding to 65112356513 its reverse (31565321156), we get a palindrome (96677677669).

The spelling of 65112356513 in words is "sixty-five billion, one hundred twelve million, three hundred fifty-six thousand, five hundred thirteen".