12663041642 has 16 divisors (see below), whose sum is σ = 19386584712. Its totient is φ = 6201262080.

The previous prime is 12663041627. The next prime is 12663041681. The reversal of 12663041642 is 24614036621.

It can be written as a sum of positive squares in 4 ways, for example, as 10200798001 + 2462243641 = 100999^2 + 49621^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 42359 + ... + 164682.

Almost surely, 2^12663041642 is an apocalyptic number.

12663041642 is a deficient number, since it is larger than the sum of its proper divisors (6723543070).

12663041642 is a wasteful number, since it uses less digits than its factorization.

12663041642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207673.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 12663041642 in words is "twelve billion, six hundred sixty-three million, forty-one thousand, six hundred forty-two".