12340475646 has 16 divisors (see below), whose sum is σ = 24760315008. Its totient is φ = 4100264600.

The previous prime is 12340475611. The next prime is 12340475659. The reversal of 12340475646 is 64657404321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12340475598 and 12340475607.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3304800 + ... + 3308531.

It is an arithmetic number, because the mean of its divisors is an integer number (1547519688).

Almost surely, 2^12340475646 is an apocalyptic number.

12340475646 is an abundant number, since it is smaller than the sum of its proper divisors (12419839362).

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

12340475646 is a wasteful number, since it uses less digits than its factorization.

12340475646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613647.

The product of its (nonzero) digits is 483840, while the sum is 42.

Adding to 12340475646 its reverse (64657404321), we get a palindrome (76997879967).

The spelling of 12340475646 in words is "twelve billion, three hundred forty million, four hundred seventy-five thousand, six hundred forty-six".