12566331255 has 8 divisors (see below), whose sum is σ = 20106130032. Its totient is φ = 6702043328.

The previous prime is 12566331247. The next prime is 12566331307. The reversal of 12566331255 is 55213366521.

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 12566331255 - 2³ = 12566331247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418877694 + ... + 418877723.

It is an arithmetic number, because the mean of its divisors is an integer number (2513266254).

Almost surely, 2^12566331255 is an apocalyptic number.

12566331255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12566331255 is a deficient number, since it is larger than the sum of its proper divisors (7539798777).

12566331255 is an equidigital number, since it uses as much as digits as its factorization.

12566331255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837755425.

The product of its digits is 162000, while the sum is 39.

Adding to 12566331255 its reverse (55213366521), we get a palindrome (67779697776).

The spelling of 12566331255 in words is "twelve billion, five hundred sixty-six million, three hundred thirty-one thousand, two hundred fifty-five".