11326040565 has 24 divisors (see below), whose sum is σ = 21080305440. Its totient is φ = 5177618208.

The previous prime is 11326040521. The next prime is 11326040591. The reversal of 11326040565 is 56504062311.

It is not a de Polignac number, because 11326040565 - 2⁶ = 11326040501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7704055 + ... + 7705524.

It is an arithmetic number, because the mean of its divisors is an integer number (878346060).

Almost surely, 2^11326040565 is an apocalyptic number.

11326040565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11326040565 is a deficient number, since it is larger than the sum of its proper divisors (9754264875).

11326040565 is a wasteful number, since it uses less digits than its factorization.

11326040565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15409601 (or 15409594 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 11326040565 in words is "eleven billion, three hundred twenty-six million, forty thousand, five hundred sixty-five".