12215503768 has 16 divisors (see below), whose sum is σ = 24665921280. Its totient is φ = 5637924768.

The previous prime is 12215503753. The next prime is 12215503771. The reversal of 12215503768 is 86730551221.

It is a self number, because there is not a number n which added to its sum of digits gives 12215503768.

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, 58728280 + ... + 58728487.

It is an arithmetic number, because the mean of its divisors is an integer number (1541620080).

Almost surely, 2^12215503768 is an apocalyptic number.

It is an amenable number.

12215503768 is an abundant number, since it is smaller than the sum of its proper divisors (12450417512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215503768 is a wasteful number, since it uses less digits than its factorization.

12215503768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117456786 (or 117456782 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 12215503768 in words is "twelve billion, two hundred fifteen million, five hundred three thousand, seven hundred sixty-eight".