12516102719999 has 4 divisors (see below), whose sum is σ = 13174844968440. Its totient is φ = 11857360471560.

The previous prime is 12516102719987. The next prime is 12516102720061. The reversal of 12516102719999 is 99991720161521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12516102719999 - 2²⁸ = 12515834284543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12516102719969) 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, 329371124192 + ... + 329371124229.

It is an arithmetic number, because the mean of its divisors is an integer number (3293711242110).

Almost surely, 2^{12516102719999} is an apocalyptic number.

12516102719999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12516102719999 is a deficient number, since it is larger than the sum of its proper divisors (658742248441).

12516102719999 is an equidigital number, since it uses as much as digits as its factorization.

12516102719999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658742248440.

The product of its (nonzero) digits is 5511240, while the sum is 62.

The spelling of 12516102719999 in words is "twelve trillion, five hundred sixteen billion, one hundred two million, seven hundred nineteen thousand, nine hundred ninety-nine".