1965579250013 has 4 divisors (see below), whose sum is σ = 1989260927808. Its totient is φ = 1941897572220.

The previous prime is 1965579250009. The next prime is 1965579250021. The reversal of 1965579250013 is 3100529755691.

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 1965579250013 - 2² = 1965579250009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1965579250213) 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, 11840838773 + ... + 11840838938.

It is an arithmetic number, because the mean of its divisors is an integer number (497315231952).

Almost surely, 2^{1965579250013} is an apocalyptic number.

It is an amenable number.

1965579250013 is a deficient number, since it is larger than the sum of its proper divisors (23681677795).

1965579250013 is an equidigital number, since it uses as much as digits as its factorization.

1965579250013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23681677794.

The product of its (nonzero) digits is 2551500, while the sum is 53.

The spelling of 1965579250013 in words is "one trillion, nine hundred sixty-five billion, five hundred seventy-nine million, two hundred fifty thousand, thirteen".