12865173446 has 32 divisors (see below), whose sum is σ = 19723896576. Its totient is φ = 6292188000.

The previous prime is 12865173443. The next prime is 12865173449. The reversal of 12865173446 is 64437156821.

It is an interprime number because it is at equal distance from previous prime (12865173443) and next prime (12865173449).

It is a self number, because there is not a number n which added to its sum of digits gives 12865173446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12865173443) 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 15 ways as a sum of consecutive naturals, for example, 15669716 + ... + 15670536.

It is an arithmetic number, because the mean of its divisors is an integer number (616371768).

Almost surely, 2^12865173446 is an apocalyptic number.

12865173446 is a deficient number, since it is larger than the sum of its proper divisors (6858723130).

12865173446 is a wasteful number, since it uses less digits than its factorization.

12865173446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628.

The product of its digits is 967680, while the sum is 47.

The spelling of 12865173446 in words is "twelve billion, eight hundred sixty-five million, one hundred seventy-three thousand, four hundred forty-six".