11313643565 has 48 divisors (see below), whose sum is σ = 16756164144. Its totient is φ = 7286630400.

The previous prime is 11313643519. The next prime is 11313643571. The reversal of 11313643565 is 56534631311.

It can be written as a sum of positive squares in 8 ways, for example, as 758341444 + 10555302121 = 27538^2 + 102739^2 .

It is not a de Polignac number, because 11313643565 - 2⁶ = 11313643501 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2250755 + ... + 2255775.

It is an arithmetic number, because the mean of its divisors is an integer number (349086753).

Almost surely, 2^11313643565 is an apocalyptic number.

It is an amenable number.

11313643565 is a deficient number, since it is larger than the sum of its proper divisors (5442520579).

11313643565 is a wasteful number, since it uses less digits than its factorization.

11313643565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598 (or 5591 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The spelling of 11313643565 in words is "eleven billion, three hundred thirteen million, six hundred forty-three thousand, five hundred sixty-five".