12626012666 has 8 divisors (see below), whose sum is σ = 18945239700. Its totient is φ = 6310932768.

The previous prime is 12626012617. The next prime is 12626012671. The reversal of 12626012666 is 66621062621.

It can be written as a sum of positive squares in 2 ways, for example, as 12536161225 + 89851441 = 111965^2 + 9479^2 .

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

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, 1029161 + ... + 1041356.

Almost surely, 2^12626012666 is an apocalyptic number.

12626012666 is a deficient number, since it is larger than the sum of its proper divisors (6319227034).

12626012666 is a wasteful number, since it uses less digits than its factorization.

12626012666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073568.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 12626012666 in words is "twelve billion, six hundred twenty-six million, twelve thousand, six hundred sixty-six".