12566630659 has 8 divisors (see below), whose sum is σ = 13741619760. Its totient is φ = 11397069600.

The previous prime is 12566630653. The next prime is 12566630677. The reversal of 12566630659 is 95603666521.

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

It is a cyclic number.

It is not a de Polignac number, because 12566630659 - 2⁹ = 12566630147 is a prime.

It is a super-2 number, since 2×12566630659² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12566630653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352164 + ... + 1361425.

It is an arithmetic number, because the mean of its divisors is an integer number (1717702470).

Almost surely, 2^12566630659 is an apocalyptic number.

12566630659 is a deficient number, since it is larger than the sum of its proper divisors (1174989101).

12566630659 is a wasteful number, since it uses less digits than its factorization.

12566630659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714021.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 12566630659 in words is "twelve billion, five hundred sixty-six million, six hundred thirty thousand, six hundred fifty-nine".