12665346342 has 64 divisors (see below), whose sum is σ = 27990040320. Its totient is φ = 3788726400.

The previous prime is 12665346319. The next prime is 12665346371. The reversal of 12665346342 is 24364356621.

It is a happy number.

12665346342 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12665346294 and 12665346303.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2032792 + ... + 2039012.

It is an arithmetic number, because the mean of its divisors is an integer number (437344380).

Almost surely, 2^12665346342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12665346342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13995020160).

12665346342 is an abundant number, since it is smaller than the sum of its proper divisors (15324693978).

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

12665346342 is a wasteful number, since it uses less digits than its factorization.

12665346342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629.

The product of its digits is 622080, while the sum is 42.

The spelling of 12665346342 in words is "twelve billion, six hundred sixty-five million, three hundred forty-six thousand, three hundred forty-two".