12666366602 has 4 divisors (see below), whose sum is σ = 18999549906. Its totient is φ = 6333183300.

The previous prime is 12666366553. The next prime is 12666366617. The reversal of 12666366602 is 20666366621.

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., 10650446401 + 2015920201 = 103201^2 + 44899^2 .

It is a super-2 number, since 2×12666366602² (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, 3166591649 + ... + 3166591652.

Almost surely, 2^12666366602 is an apocalyptic number.

12666366602 is a deficient number, since it is larger than the sum of its proper divisors (6333183304).

12666366602 is an equidigital number, since it uses as much as digits as its factorization.

12666366602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333183303.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 12666366602 in words is "twelve billion, six hundred sixty-six million, three hundred sixty-six thousand, six hundred two".