12401343313566 has 32 divisors (see below), whose sum is σ = 25658158924800. Its totient is φ = 3991204691040.

The previous prime is 12401343313553. The next prime is 12401343313571. The reversal of 12401343313566 is 66531334310421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31163871 + ... + 31559301.

It is an arithmetic number, because the mean of its divisors is an integer number (801817466400).

Almost surely, 2^{12401343313566} is an apocalyptic number.

12401343313566 is an abundant number, since it is smaller than the sum of its proper divisors (13256815611234).

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

12401343313566 is a wasteful number, since it uses less digits than its factorization.

12401343313566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575704.

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 12401343313566 its reverse (66531334310421), we get a palindrome (78932677623987).

The spelling of 12401343313566 in words is "twelve trillion, four hundred one billion, three hundred forty-three million, three hundred thirteen thousand, five hundred sixty-six".