13218973243246 has 16 divisors (see below), whose sum is σ = 19901676994128. Its totient is φ = 6585122174400.

The previous prime is 13218973243193. The next prime is 13218973243271. The reversal of 13218973243246 is 64234237981231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9674280 + ... + 10955803.

It is an arithmetic number, because the mean of its divisors is an integer number (1243854812133).

Almost surely, 2^{13218973243246} is an apocalyptic number.

13218973243246 is a deficient number, since it is larger than the sum of its proper divisors (6682703750882).

13218973243246 is a wasteful number, since it uses less digits than its factorization.

13218973243246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20631267.

The product of its digits is 10450944, while the sum is 55.

The spelling of 13218973243246 in words is "thirteen trillion, two hundred eighteen billion, nine hundred seventy-three million, two hundred forty-three thousand, two hundred forty-six".