12731366064421 has 8 divisors (see below), whose sum is σ = 12735942224544. Its totient is φ = 12726790661520.

The previous prime is 12731366064409. The next prime is 12731366064433. The reversal of 12731366064421 is 12446066313721.

It is an interprime number because it is at equal distance from previous prime (12731366064409) and next prime (12731366064433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12731366064421 - 2¹⁹ = 12731365540133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731366064121) 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, 34582006 + ... + 34948216.

It is an arithmetic number, because the mean of its divisors is an integer number (1591992778068).

Almost surely, 2^{12731366064421} is an apocalyptic number.

It is an amenable number.

12731366064421 is a deficient number, since it is larger than the sum of its proper divisors (4576160123).

12731366064421 is an equidigital number, since it uses as much as digits as its factorization.

12731366064421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378611.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 12731366064421 in words is "twelve trillion, seven hundred thirty-one billion, three hundred sixty-six million, sixty-four thousand, four hundred twenty-one".