12718102768181 has 4 divisors (see below), whose sum is σ = 12718232019852. Its totient is φ = 12717973516512.

The previous prime is 12718102768123. The next prime is 12718102768211. The reversal of 12718102768181 is 18186720181721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3273237205681 + 9444865562500 = 1809209^2 + 3073250^2 .

It is a cyclic number.

It is not a de Polignac number, because 12718102768181 - 2¹⁸ = 12718102506037 is a prime.

It is a super-2 number, since 2×12718102768181² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12718102168181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64478126 + ... + 64675071.

It is an arithmetic number, because the mean of its divisors is an integer number (3179558004963).

Almost surely, 2^{12718102768181} is an apocalyptic number.

It is an amenable number.

12718102768181 is a deficient number, since it is larger than the sum of its proper divisors (129251671).

12718102768181 is an equidigital number, since it uses as much as digits as its factorization.

12718102768181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129251670.

The product of its (nonzero) digits is 602112, while the sum is 53.

The spelling of 12718102768181 in words is "twelve trillion, seven hundred eighteen billion, one hundred two million, seven hundred sixty-eight thousand, one hundred eighty-one".