11657225165 has 16 divisors (see below), whose sum is σ = 14334168240. Its totient is φ = 9095585280.

The previous prime is 11657225119. The next prime is 11657225183. The reversal of 11657225165 is 56152275611.

It can be written as a sum of positive squares in 8 ways, for example, as 7837737961 + 3819487204 = 88531^2 + 61802^2 .

It is not a de Polignac number, because 11657225165 - 2¹⁰ = 11657224141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 919691 + ... + 932279.

It is an arithmetic number, because the mean of its divisors is an integer number (895885515).

Almost surely, 2^11657225165 is an apocalyptic number.

It is an amenable number.

11657225165 is a deficient number, since it is larger than the sum of its proper divisors (2676943075).

11657225165 is a wasteful number, since it uses less digits than its factorization.

11657225165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17152.

The product of its digits is 126000, while the sum is 41.

The spelling of 11657225165 in words is "eleven billion, six hundred fifty-seven million, two hundred twenty-five thousand, one hundred sixty-five".