12547991116 has 12 divisors (see below), whose sum is σ = 21963877488. Its totient is φ = 6272597552.

The previous prime is 12547991089. The next prime is 12547991123. The reversal of 12547991116 is 61119974521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329176 + ... + 365311.

It is an arithmetic number, because the mean of its divisors is an integer number (1830323124).

Almost surely, 2^12547991116 is an apocalyptic number.

It is an amenable number.

12547991116 is a deficient number, since it is larger than the sum of its proper divisors (9415886372).

12547991116 is a wasteful number, since it uses less digits than its factorization.

12547991116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699008 (or 699006 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The spelling of 12547991116 in words is "twelve billion, five hundred forty-seven million, nine hundred ninety-one thousand, one hundred sixteen".