12815572203 has 24 divisors (see below), whose sum is σ = 21605995008. Its totient is φ = 7167370032.

The previous prime is 12815572163. The next prime is 12815572261. The reversal of 12815572203 is 30227551821.

12815572203 is a `hidden beast` number, since 1 + 2 + 81 + 5 + 572 + 2 + 0 + 3 = 666.

It is not a de Polignac number, because 12815572203 - 2⁶ = 12815572139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12815572703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2161101 + ... + 2167022.

It is an arithmetic number, because the mean of its divisors is an integer number (900249792).

Almost surely, 2^12815572203 is an apocalyptic number.

12815572203 is a deficient number, since it is larger than the sum of its proper divisors (8790422805).

12815572203 is a wasteful number, since it uses less digits than its factorization.

12815572203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328183 (or 4328180 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 12815572203 in words is "twelve billion, eight hundred fifteen million, five hundred seventy-two thousand, two hundred three".