12663542606 has 16 divisors (see below), whose sum is σ = 22316173488. Its totient is φ = 5313374400.

The previous prime is 12663542603. The next prime is 12663542609. The reversal of 12663542606 is 60624536621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12663542603) and next prime (12663542609).

It is a super-2 number, since 2×12663542606² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663542603) by changing a digit.

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, 22138775 + ... + 22139346.

It is an arithmetic number, because the mean of its divisors is an integer number (1394760843).

Almost surely, 2^12663542606 is an apocalyptic number.

12663542606 is a deficient number, since it is larger than the sum of its proper divisors (9652630882).

12663542606 is a wasteful number, since it uses less digits than its factorization.

12663542606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44278147.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 12663542606 in words is "twelve billion, six hundred sixty-three million, five hundred forty-two thousand, six hundred six".