12765843222 has 64 divisors (see below), whose sum is σ = 28155838464. Its totient is φ = 3826455840.

The previous prime is 12765843179. The next prime is 12765843247. The reversal of 12765843222 is 22234856721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7675563 + ... + 7677225.

It is an arithmetic number, because the mean of its divisors is an integer number (439934976).

Almost surely, 2^12765843222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12765843222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14077919232).

12765843222 is an abundant number, since it is smaller than the sum of its proper divisors (15389995242).

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

12765843222 is a wasteful number, since it uses less digits than its factorization.

12765843222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its digits is 322560, while the sum is 42.

The spelling of 12765843222 in words is "twelve billion, seven hundred sixty-five million, eight hundred forty-three thousand, two hundred twenty-two".