12036621389 has 16 divisors (see below), whose sum is σ = 13104337344. Its totient is φ = 10989820800.

The previous prime is 12036621347. The next prime is 12036621403. The reversal of 12036621389 is 98312663021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12036621389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12036621319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433649 + ... + 460569.

It is an arithmetic number, because the mean of its divisors is an integer number (819021084).

Almost surely, 2^12036621389 is an apocalyptic number.

It is an amenable number.

12036621389 is a deficient number, since it is larger than the sum of its proper divisors (1067715955).

12036621389 is a wasteful number, since it uses less digits than its factorization.

12036621389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27308.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 12036621389 in words is "twelve billion, thirty-six million, six hundred twenty-one thousand, three hundred eighty-nine".