11751536665 has 16 divisors (see below), whose sum is σ = 15711148800. Its totient is φ = 8364728320.

The previous prime is 11751536659. The next prime is 11751536669. The reversal of 11751536665 is 56663515711.

It is not a de Polignac number, because 11751536665 - 2¹¹ = 11751534617 is a prime.

It is a super-2 number, since 2×11751536665² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11751536669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2270440 + ... + 2275609.

It is an arithmetic number, because the mean of its divisors is an integer number (981946800).

Almost surely, 2^11751536665 is an apocalyptic number.

It is an amenable number.

11751536665 is a deficient number, since it is larger than the sum of its proper divisors (3959612135).

11751536665 is a wasteful number, since it uses less digits than its factorization.

11751536665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546112.

The product of its digits is 567000, while the sum is 46.

The spelling of 11751536665 in words is "eleven billion, seven hundred fifty-one million, five hundred thirty-six thousand, six hundred sixty-five".