12447217634 has 16 divisors (see below), whose sum is σ = 19144339200. Its totient is φ = 6066059040.

The previous prime is 12447217633. The next prime is 12447217667. The reversal of 12447217634 is 43671274421.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 12447217591 and 12447217600.

It is not an unprimeable number, because it can be changed into a prime (12447217633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15767 + ... + 158565.

It is an arithmetic number, because the mean of its divisors is an integer number (1196521200).

Almost surely, 2^12447217634 is an apocalyptic number.

12447217634 is a deficient number, since it is larger than the sum of its proper divisors (6697121566).

12447217634 is a wasteful number, since it uses less digits than its factorization.

12447217634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143905.

The product of its digits is 225792, while the sum is 41.

The spelling of 12447217634 in words is "twelve billion, four hundred forty-seven million, two hundred seventeen thousand, six hundred thirty-four".