12388621387405 has 32 divisors (see below), whose sum is σ = 15795606528000. Its totient is φ = 9309938787072.

The previous prime is 12388621387321. The next prime is 12388621387451. The reversal of 12388621387405 is 50478312688321.

It is not a de Polignac number, because 12388621387405 - 2⁹ = 12388621386893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12388621387405.

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 31 ways as a sum of consecutive naturals, for example, 99206196 + ... + 99330994.

It is an arithmetic number, because the mean of its divisors is an integer number (493612704000).

Almost surely, 2^{12388621387405} is an apocalyptic number.

It is an amenable number.

12388621387405 is a deficient number, since it is larger than the sum of its proper divisors (3406985140595).

12388621387405 is a wasteful number, since it uses less digits than its factorization.

12388621387405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143373.

The product of its (nonzero) digits is 15482880, while the sum is 58.

The spelling of 12388621387405 in words is "twelve trillion, three hundred eighty-eight billion, six hundred twenty-one million, three hundred eighty-seven thousand, four hundred five".