12438384455 has 16 divisors (see below), whose sum is σ = 17119951680. Its totient is φ = 8498380032.

The previous prime is 12438384433. The next prime is 12438384467. The reversal of 12438384455 is 55448383421.

It is a cyclic number.

It is not a de Polignac number, because 12438384455 - 2²⁴ = 12421607239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631790 + ... + 651179.

It is an arithmetic number, because the mean of its divisors is an integer number (1069996980).

Almost surely, 2^12438384455 is an apocalyptic number.

12438384455 is a deficient number, since it is larger than the sum of its proper divisors (4681567225).

12438384455 is a wasteful number, since it uses less digits than its factorization.

12438384455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283258.

The product of its digits is 1843200, while the sum is 47.

The spelling of 12438384455 in words is "twelve billion, four hundred thirty-eight million, three hundred eighty-four thousand, four hundred fifty-five".