12036621388 has 24 divisors (see below), whose sum is σ = 23368484160. Its totient is φ = 5378458320.

The previous prime is 12036621347. The next prime is 12036621403. The reversal of 12036621388 is 88312663021.

It is a self number, because there is not a number n which added to its sum of digits gives 12036621388.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2315706 + ... + 2320897.

It is an arithmetic number, because the mean of its divisors is an integer number (973686840).

Almost surely, 2^12036621388 is an apocalyptic number.

It is an amenable number.

12036621388 is a deficient number, since it is larger than the sum of its proper divisors (11331862772).

12036621388 is a wasteful number, since it uses less digits than its factorization.

12036621388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636677 (or 4636675 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 12036621388 in words is "twelve billion, thirty-six million, six hundred twenty-one thousand, three hundred eighty-eight".