12355181644238 has 8 divisors (see below), whose sum is σ = 18601159081440. Its totient is φ = 6154795283760.

The previous prime is 12355181644219. The next prime is 12355181644277. The reversal of 12355181644238 is 83244618155321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12355181644238.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11397768503 + ... + 11397769586.

It is an arithmetic number, because the mean of its divisors is an integer number (2325144885180).

Almost surely, 2^{12355181644238} is an apocalyptic number.

12355181644238 is a deficient number, since it is larger than the sum of its proper divisors (6245977437202).

12355181644238 is a wasteful number, since it uses less digits than its factorization.

12355181644238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22795538362.

The product of its digits is 5529600, while the sum is 53.

Adding to 12355181644238 its reverse (83244618155321), we get a palindrome (95599799799559).

The spelling of 12355181644238 in words is "twelve trillion, three hundred fifty-five billion, one hundred eighty-one million, six hundred forty-four thousand, two hundred thirty-eight".