11664310855 has 4 divisors (see below), whose sum is σ = 13997173032. Its totient is φ = 9331448680.

The previous prime is 11664310841. The next prime is 11664310877. The reversal of 11664310855 is 55801346611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55801346611 = 37 ⋅1508144503.

It is not a de Polignac number, because 11664310855 - 2¹¹ = 11664308807 is a prime.

It is a super-2 number, since 2×11664310855² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1166431081 + ... + 1166431090.

It is an arithmetic number, because the mean of its divisors is an integer number (3499293258).

Almost surely, 2^11664310855 is an apocalyptic number.

11664310855 is a deficient number, since it is larger than the sum of its proper divisors (2332862177).

11664310855 is an equidigital number, since it uses as much as digits as its factorization.

11664310855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332862176.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 11664310855 in words is "eleven billion, six hundred sixty-four million, three hundred ten thousand, eight hundred fifty-five".