12616216266 has 64 divisors (see below), whose sum is σ = 27500083200. Its totient is φ = 3847415616.

The previous prime is 12616216259. The next prime is 12616216369. The reversal of 12616216266 is 66261261621.

It is a nude number because it is divisible by every one of its digits.

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, 280315 + ... + 322193.

It is an arithmetic number, because the mean of its divisors is an integer number (429688800).

Almost surely, 2^12616216266 is an apocalyptic number.

12616216266 is an abundant number, since it is smaller than the sum of its proper divisors (14883866934).

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

12616216266 is a wasteful number, since it uses less digits than its factorization.

12616216266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42003.

The product of its digits is 62208, while the sum is 39.

Adding to 12616216266 its reverse (66261261621), we get a palindrome (78877477887).

The spelling of 12616216266 in words is "twelve billion, six hundred sixteen million, two hundred sixteen thousand, two hundred sixty-six".