426664646413 has 2 divisors, whose sum is σ = 426664646414. Its totient is φ = 426664646412.

The previous prime is 426664646393. The next prime is 426664646453. The reversal of 426664646413 is 314646466624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395241057124 + 31423589289 = 628682^2 + 177267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426664646413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426664646453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213332323206 + 213332323207.

It is an arithmetic number, because the mean of its divisors is an integer number (213332323207).

Almost surely, 2^426664646413 is an apocalyptic number.

It is an amenable number.

426664646413 is a deficient number, since it is larger than the sum of its proper divisors (1).

426664646413 is an equidigital number, since it uses as much as digits as its factorization.

426664646413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 52.

The spelling of 426664646413 in words is "four hundred twenty-six billion, six hundred sixty-four million, six hundred forty-six thousand, four hundred thirteen".