12818510122687 has 4 divisors (see below), whose sum is σ = 12900156684136. Its totient is φ = 12736863561240.

The previous prime is 12818510122631. The next prime is 12818510122793. The reversal of 12818510122687 is 78622101581821.

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 12818510122687 - 2⁷ = 12818510122559 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 (12818510122487) 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, 40823280489 + ... + 40823280802.

It is an arithmetic number, because the mean of its divisors is an integer number (3225039171034).

Almost surely, 2^{12818510122687} is an apocalyptic number.

12818510122687 is a deficient number, since it is larger than the sum of its proper divisors (81646561449).

12818510122687 is an equidigital number, since it uses as much as digits as its factorization.

12818510122687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81646561448.

The product of its (nonzero) digits is 860160, while the sum is 52.

The spelling of 12818510122687 in words is "twelve trillion, eight hundred eighteen billion, five hundred ten million, one hundred twenty-two thousand, six hundred eighty-seven".