12718637418523 has 8 divisors (see below), whose sum is σ = 13157546946480. Its totient is φ = 12279750278880.

The previous prime is 12718637418481. The next prime is 12718637418559. The reversal of 12718637418523 is 32581473681721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12718637418523 - 2¹³ = 12718637410331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12718637518523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4437213 + ... + 6717598.

It is an arithmetic number, because the mean of its divisors is an integer number (1644693368310).

Almost surely, 2^{12718637418523} is an apocalyptic number.

12718637418523 is a deficient number, since it is larger than the sum of its proper divisors (438909527957).

12718637418523 is a wasteful number, since it uses less digits than its factorization.

12718637418523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11194157.

The product of its digits is 13547520, while the sum is 58.

The spelling of 12718637418523 in words is "twelve trillion, seven hundred eighteen billion, six hundred thirty-seven million, four hundred eighteen thousand, five hundred twenty-three".