12643735116 has 12 divisors (see below), whose sum is σ = 29502048632. Its totient is φ = 4214578368.

The previous prime is 12643735109. The next prime is 12643735121. The reversal of 12643735116 is 61153734621.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526822285 + ... + 526822308.

Almost surely, 2^12643735116 is an apocalyptic number.

It is an amenable number.

12643735116 is an abundant number, since it is smaller than the sum of its proper divisors (16858313516).

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

12643735116 is a wasteful number, since it uses less digits than its factorization.

12643735116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053644600 (or 1053644598 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The spelling of 12643735116 in words is "twelve billion, six hundred forty-three million, seven hundred thirty-five thousand, one hundred sixteen".