12447111611 has 12 divisors (see below), whose sum is σ = 13692403200. Its totient is φ = 11306568240.

The previous prime is 12447111583. The next prime is 12447111619. The reversal of 12447111611 is 11611174421.

It is a de Polignac number, because none of the positive numbers 2^k-12447111611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12447111619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114545 + ... + 194973.

It is an arithmetic number, because the mean of its divisors is an integer number (1141033600).

Almost surely, 2^12447111611 is an apocalyptic number.

12447111611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12447111611 is a deficient number, since it is larger than the sum of its proper divisors (1245291589).

12447111611 is a wasteful number, since it uses less digits than its factorization.

12447111611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81730 (or 81719 counting only the distinct ones).

The product of its digits is 1344, while the sum is 29.

The spelling of 12447111611 in words is "twelve billion, four hundred forty-seven million, one hundred eleven thousand, six hundred eleven".