14187218536681 has 2 divisors, whose sum is σ = 14187218536682. Its totient is φ = 14187218536680.

The previous prime is 14187218536669. The next prime is 14187218536783. The reversal of 14187218536681 is 18663581278141.

14187218536681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11365124288400 + 2822094248281 = 3371220^2 + 1679909^2 .

It is a cyclic number.

It is not a de Polignac number, because 14187218536681 - 2¹⁷ = 14187218405609 is a prime.

It is a super-2 number, since 2×14187218536681² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14187218536481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7093609268340 + 7093609268341.

It is an arithmetic number, because the mean of its divisors is an integer number (7093609268341).

Almost surely, 2^{14187218536681} is an apocalyptic number.

It is an amenable number.

14187218536681 is a deficient number, since it is larger than the sum of its proper divisors (1).

14187218536681 is an equidigital number, since it uses as much as digits as its factorization.

14187218536681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 61.

The spelling of 14187218536681 in words is "fourteen trillion, one hundred eighty-seven billion, two hundred eighteen million, five hundred thirty-six thousand, six hundred eighty-one".