11944992065 has 4 divisors (see below), whose sum is σ = 14333990484. Its totient is φ = 9555993648.

The previous prime is 11944992023. The next prime is 11944992089. The reversal of 11944992065 is 56029944911.

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 8985523264 + 2959468801 = 94792^2 + 54401^2 .

It is a cyclic number.

It is not a de Polignac number, because 11944992065 - 2²⁶ = 11877883201 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, 1194499202 + ... + 1194499211.

It is an arithmetic number, because the mean of its divisors is an integer number (3583497621).

Almost surely, 2^11944992065 is an apocalyptic number.

It is an amenable number.

11944992065 is a deficient number, since it is larger than the sum of its proper divisors (2388998419).

11944992065 is an equidigital number, since it uses as much as digits as its factorization.

11944992065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388998418.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 11944992065 in words is "eleven billion, nine hundred forty-four million, nine hundred ninety-two thousand, sixty-five".