12173030815 has 16 divisors (see below), whose sum is σ = 15952678560. Its totient is φ = 8843627520.

The previous prime is 12173030783. The next prime is 12173030819. The reversal of 12173030815 is 51803037121.

It is not a de Polignac number, because 12173030815 - 2⁵ = 12173030783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173030819) 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, 66570 + ... + 169639.

It is an arithmetic number, because the mean of its divisors is an integer number (997042410).

Almost surely, 2^12173030815 is an apocalyptic number.

12173030815 is a deficient number, since it is larger than the sum of its proper divisors (3779647745).

12173030815 is a wasteful number, since it uses less digits than its factorization.

12173030815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237162.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 12173030815 its reverse (51803037121), we get a palindrome (63976067936).

The spelling of 12173030815 in words is "twelve billion, one hundred seventy-three million, thirty thousand, eight hundred fifteen".