12162717756018 has 36 divisors (see below), whose sum is σ = 27084035905290. Its totient is φ = 3944665210176.

The previous prime is 12162717756001. The next prime is 12162717756019. The reversal of 12162717756018 is 81065771726121.

It is a happy number.

12162717756018 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 2 + 7 + 1 + 77 + 560 + 1 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 12146361136569 + 16356619449 = 3485163^2 + 127893^2 .

It is not an unprimeable number, because it can be changed into a prime (12162717756019) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 246763723 + ... + 246813006.

Almost surely, 2^{12162717756018} is an apocalyptic number.

12162717756018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12162717756018 is an abundant number, since it is smaller than the sum of its proper divisors (14921318149272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12162717756018 is a wasteful number, since it uses less digits than its factorization.

12162717756018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493576811 (or 493576771 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The spelling of 12162717756018 in words is "twelve trillion, one hundred sixty-two billion, seven hundred seventeen million, seven hundred fifty-six thousand, eighteen".