12547991118 has 32 divisors (see below), whose sum is σ = 27033753600. Its totient is φ = 3859875936.

The previous prime is 12547991089. The next prime is 12547991123. The reversal of 12547991118 is 81119974521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298443 + ... + 337881.

It is an arithmetic number, because the mean of its divisors is an integer number (844804800).

Almost surely, 2^12547991118 is an apocalyptic number.

12547991118 is an abundant number, since it is smaller than the sum of its proper divisors (14485762482).

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

12547991118 is a wasteful number, since it uses less digits than its factorization.

12547991118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43536.

The product of its digits is 181440, while the sum is 48.

The spelling of 12547991118 in words is "twelve billion, five hundred forty-seven million, nine hundred ninety-one thousand, one hundred eighteen".