12181523778214 has 96 divisors (see below), whose sum is σ = 22724902662336. Its totient is φ = 4870956625920.

The previous prime is 12181523778197. The next prime is 12181523778271. The reversal of 12181523778214 is 41287732518121.

12181523778214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12181523778214³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 716846902 + ... + 716863894.

It is an arithmetic number, because the mean of its divisors is an integer number (236717736066).

Almost surely, 2^{12181523778214} is an apocalyptic number.

12181523778214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12181523778214 is a deficient number, since it is larger than the sum of its proper divisors (10543378884122).

12181523778214 is a wasteful number, since it uses less digits than its factorization.

12181523778214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24830 (or 24823 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 52.

The spelling of 12181523778214 in words is "twelve trillion, one hundred eighty-one billion, five hundred twenty-three million, seven hundred seventy-eight thousand, two hundred fourteen".