12766634216 has 32 divisors (see below), whose sum is σ = 28096458240. Its totient is φ = 5323537728.

The previous prime is 12766634203. The next prime is 12766634227. The reversal of 12766634216 is 61243666721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3078680 + ... + 3082823.

It is an arithmetic number, because the mean of its divisors is an integer number (878014320).

Almost surely, 2^12766634216 is an apocalyptic number.

It is an amenable number.

12766634216 is an abundant number, since it is smaller than the sum of its proper divisors (15329824024).

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

12766634216 is a wasteful number, since it uses less digits than its factorization.

12766634216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161553 (or 6161549 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The spelling of 12766634216 in words is "twelve billion, seven hundred sixty-six million, six hundred thirty-four thousand, two hundred sixteen".