13218105216775 has 24 divisors (see below), whose sum is σ = 16465085167104. Its totient is φ = 10526339301600.

The previous prime is 13218105216709. The next prime is 13218105216787. The reversal of 13218105216775 is 57761250181231.

It is not a de Polignac number, because 13218105216775 - 2²⁵ = 13218071662343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89633652 + ... + 89780998.

It is an arithmetic number, because the mean of its divisors is an integer number (686045215296).

Almost surely, 2^{13218105216775} is an apocalyptic number.

13218105216775 is a deficient number, since it is larger than the sum of its proper divisors (3246979950329).

13218105216775 is a wasteful number, since it uses less digits than its factorization.

13218105216775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163671 (or 163666 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 13218105216775 in words is "thirteen trillion, two hundred eighteen billion, one hundred five million, two hundred sixteen thousand, seven hundred seventy-five".