12440660666346 has 48 divisors (see below), whose sum is σ = 29424894014880. Its totient is φ = 3767372033760.

The previous prime is 12440660666311. The next prime is 12440660666351. The reversal of 12440660666346 is 64366606604421.

It is a junction number, because it is equal to n+sod(n) for n = 12440660666292 and 12440660666301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20746456 + ... + 21337683.

It is an arithmetic number, because the mean of its divisors is an integer number (613018625310).

Almost surely, 2^{12440660666346} is an apocalyptic number.

12440660666346 is an abundant number, since it is smaller than the sum of its proper divisors (16984233348534).

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

12440660666346 is a wasteful number, since it uses less digits than its factorization.

12440660666346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42085651 (or 42085648 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 12440660666346 in words is "twelve trillion, four hundred forty billion, six hundred sixty million, six hundred sixty-six thousand, three hundred forty-six".