12659164722 has 24 divisors (see below), whose sum is σ = 27434840940. Its totient is φ = 4218698400.

The previous prime is 12659164717. The next prime is 12659164723. The reversal of 12659164722 is 22746195621.

12659164722 is a `hidden beast` number, since 12 + 6 + 591 + 6 + 47 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12506172561 + 152992161 = 111831^2 + 12369^2 .

It is not an unprimeable number, because it can be changed into a prime (12659164723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7029 + ... + 159272.

Almost surely, 2^12659164722 is an apocalyptic number.

12659164722 is an abundant number, since it is smaller than the sum of its proper divisors (14775676218).

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

12659164722 is a wasteful number, since it uses less digits than its factorization.

12659164722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170538 (or 170535 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 12659164722 in words is "twelve billion, six hundred fifty-nine million, one hundred sixty-four thousand, seven hundred twenty-two".