11711225565 has 64 divisors (see below), whose sum is σ = 22451385600. Its totient is φ = 5757841152.

The previous prime is 11711225551. The next prime is 11711225579. The reversal of 11711225565 is 56552211711.

11711225565 is a `hidden beast` number, since 1 + 1 + 71 + 1 + 2 + 25 + 565 = 666.

It is an interprime number because it is at equal distance from previous prime (11711225551) and next prime (11711225579).

It is not a de Polignac number, because 11711225565 - 2¹² = 11711221469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1447351 + ... + 1455419.

It is an arithmetic number, because the mean of its divisors is an integer number (350802900).

Almost surely, 2^11711225565 is an apocalyptic number.

11711225565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11711225565 is a deficient number, since it is larger than the sum of its proper divisors (10740160035).

11711225565 is a wasteful number, since it uses less digits than its factorization.

11711225565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923 (or 8917 counting only the distinct ones).

The product of its digits is 21000, while the sum is 36.

The spelling of 11711225565 in words is "eleven billion, seven hundred eleven million, two hundred twenty-five thousand, five hundred sixty-five".