12722267866 has 64 divisors (see below), whose sum is σ = 25537317120. Its totient is φ = 4601180160.

The previous prime is 12722267861. The next prime is 12722267867. The reversal of 12722267866 is 66876222721.

It is not an unprimeable number, because it can be changed into a prime (12722267861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157830 + ... + 224398.

It is an arithmetic number, because the mean of its divisors is an integer number (399020580).

Almost surely, 2^12722267866 is an apocalyptic number.

12722267866 is an abundant number, since it is smaller than the sum of its proper divisors (12815049254).

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

12722267866 is a wasteful number, since it uses less digits than its factorization.

12722267866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66679.

The product of its digits is 1354752, while the sum is 49.

The spelling of 12722267866 in words is "twelve billion, seven hundred twenty-two million, two hundred sixty-seven thousand, eight hundred sixty-six".