11841668181 has 32 divisors (see below), whose sum is σ = 20060376320. Its totient is φ = 6762958272.

The previous prime is 11841668159. The next prime is 11841668191. The reversal of 11841668181 is 18186614811.

It is not a de Polignac number, because 11841668181 - 2²² = 11837473877 is a prime.

It is a super-2 number, since 2×11841668181² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11841668191) 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, 349131 + ... + 381543.

It is an arithmetic number, because the mean of its divisors is an integer number (626886760).

Almost surely, 2^11841668181 is an apocalyptic number.

It is an amenable number.

11841668181 is a deficient number, since it is larger than the sum of its proper divisors (8218708139).

11841668181 is a wasteful number, since it uses less digits than its factorization.

11841668181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34362 (or 34356 counting only the distinct ones).

The product of its digits is 73728, while the sum is 45.

The spelling of 11841668181 in words is "eleven billion, eight hundred forty-one million, six hundred sixty-eight thousand, one hundred eighty-one".