12663511226 has 8 divisors (see below), whose sum is σ = 19001970900. Its totient is φ = 6329520928.

The previous prime is 12663511193. The next prime is 12663511243. The reversal of 12663511226 is 62211536621.

It can be written as a sum of positive squares in 2 ways, for example, as 9665839225 + 2997672001 = 98315^2 + 54751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×12663511226³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110251 + ... + 1121598.

Almost surely, 2^12663511226 is an apocalyptic number.

12663511226 is a deficient number, since it is larger than the sum of its proper divisors (6338459674).

12663511226 is a wasteful number, since it uses less digits than its factorization.

12663511226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234688.

The product of its digits is 25920, while the sum is 35.

The spelling of 12663511226 in words is "twelve billion, six hundred sixty-three million, five hundred eleven thousand, two hundred twenty-six".