11166468165 has 32 divisors (see below), whose sum is σ = 20003068800. Its totient is φ = 5909978880.

The previous prime is 11166468161. The next prime is 11166468167. The reversal of 11166468165 is 56186466111.

11166468165 is a `hidden beast` number, since 11 + 16 + 6 + 468 + 165 = 666.

It is not a de Polignac number, because 11166468165 - 2² = 11166468161 is a prime.

It is a super-2 number, since 2×11166468165² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11166468165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166468161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298020 + ... + 333389.

It is an arithmetic number, because the mean of its divisors is an integer number (625095900).

Almost surely, 2^11166468165 is an apocalyptic number.

11166468165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11166468165 is a deficient number, since it is larger than the sum of its proper divisors (8836600635).

11166468165 is a wasteful number, since it uses less digits than its factorization.

11166468165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631554 (or 631548 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 11166468165 in words is "eleven billion, one hundred sixty-six million, four hundred sixty-eight thousand, one hundred sixty-five".