12215563475 has 24 divisors (see below), whose sum is σ = 15245490000. Its totient is φ = 9709240320.

The previous prime is 12215563457. The next prime is 12215563519. The reversal of 12215563475 is 57436551221.

12215563475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12215563475 - 2⁸ = 12215563219 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6025412 + ... + 6027438.

It is an arithmetic number, because the mean of its divisors is an integer number (635228750).

Almost surely, 2^12215563475 is an apocalyptic number.

12215563475 is a deficient number, since it is larger than the sum of its proper divisors (3029926525).

12215563475 is a wasteful number, since it uses less digits than its factorization.

12215563475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3474 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The spelling of 12215563475 in words is "twelve billion, two hundred fifteen million, five hundred sixty-three thousand, four hundred seventy-five".