12861005118 has 32 divisors (see below), whose sum is σ = 27864564000. Its totient is φ = 3957228288.

The previous prime is 12861005111. The next prime is 12861005153. The reversal of 12861005118 is 81150016821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861005111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474643 + ... + 501006.

It is an arithmetic number, because the mean of its divisors is an integer number (870767625).

Almost surely, 2^12861005118 is an apocalyptic number.

12861005118 is an abundant number, since it is smaller than the sum of its proper divisors (15003558882).

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

12861005118 is an equidigital number, since it uses as much as digits as its factorization.

12861005118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975693 (or 975667 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 33.

The spelling of 12861005118 in words is "twelve billion, eight hundred sixty-one million, five thousand, one hundred eighteen".