11265644513 has 4 divisors (see below), whose sum is σ = 11755455168. Its totient is φ = 10775833860.

The previous prime is 11265644501. The next prime is 11265644527. The reversal of 11265644513 is 31544656211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31544656211 = 163621 ⋅192791.

It is a cyclic number.

It is not a de Polignac number, because 11265644513 - 2¹⁰ = 11265643489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11265644213) 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, 244905293 + ... + 244905338.

It is an arithmetic number, because the mean of its divisors is an integer number (2938863792).

Almost surely, 2^11265644513 is an apocalyptic number.

It is an amenable number.

11265644513 is a deficient number, since it is larger than the sum of its proper divisors (489810655).

11265644513 is an equidigital number, since it uses as much as digits as its factorization.

11265644513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489810654.

The product of its digits is 86400, while the sum is 38.

The spelling of 11265644513 in words is "eleven billion, two hundred sixty-five million, six hundred forty-four thousand, five hundred thirteen".