12803317426 has 4 divisors (see below), whose sum is σ = 19204976142. Its totient is φ = 6401658712.

The previous prime is 12803317403. The next prime is 12803317441. The reversal of 12803317426 is 62471330821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11870320401 + 932997025 = 108951^2 + 30545^2 .

It is a super-2 number, since 2×12803317426² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200829355 + ... + 3200829358.

Almost surely, 2^12803317426 is an apocalyptic number.

12803317426 is a deficient number, since it is larger than the sum of its proper divisors (6401658716).

12803317426 is an equidigital number, since it uses as much as digits as its factorization.

12803317426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401658715.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 12803317426 in words is "twelve billion, eight hundred three million, three hundred seventeen thousand, four hundred twenty-six".