12641263266 has 32 divisors (see below), whose sum is σ = 27232800768. Its totient is φ = 3900528720.

The previous prime is 12641263259. The next prime is 12641263273. The reversal of 12641263266 is 66236214621.

It is an interprime number because it is at equal distance from previous prime (12641263259) and next prime (12641263273).

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 in 15 ways as a sum of consecutive naturals, for example, 1473196 + ... + 1481751.

It is an arithmetic number, because the mean of its divisors is an integer number (851025024).

Almost surely, 2^12641263266 is an apocalyptic number.

12641263266 is an abundant number, since it is smaller than the sum of its proper divisors (14591537502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12641263266 is a wasteful number, since it uses less digits than its factorization.

12641263266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955006.

The product of its digits is 124416, while the sum is 39.

Adding to 12641263266 its reverse (66236214621), we get a palindrome (78877477887).

The spelling of 12641263266 in words is "twelve billion, six hundred forty-one million, two hundred sixty-three thousand, two hundred sixty-six".