12381813326 has 8 divisors (see below), whose sum is σ = 18578305704. Its totient is φ = 6189044760.

The previous prime is 12381813287. The next prime is 12381813341. The reversal of 12381813326 is 62331818321.

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

It is a super-2 number, since 2×12381813326² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12381813326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922625 + ... + 935948.

It is an arithmetic number, because the mean of its divisors is an integer number (2322288213).

Almost surely, 2^12381813326 is an apocalyptic number.

12381813326 is a deficient number, since it is larger than the sum of its proper divisors (6196492378).

12381813326 is a wasteful number, since it uses less digits than its factorization.

12381813326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861906.

The product of its digits is 41472, while the sum is 38.

The spelling of 12381813326 in words is "twelve billion, three hundred eighty-one million, eight hundred thirteen thousand, three hundred twenty-six".