426633221429 has 2 divisors, whose sum is σ = 426633221430. Its totient is φ = 426633221428.

The previous prime is 426633221423. The next prime is 426633221471. The reversal of 426633221429 is 924122336624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337113778225 + 89519443204 = 580615^2 + 299198^2 .

It is a cyclic number.

It is not a de Polignac number, because 426633221429 - 2³⁶ = 357913744693 is a prime.

It is a super-2 number, since 2×426633221429² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 426633221429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426633221423) by changing a digit.

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 as a sum of consecutive naturals, namely, 213316610714 + 213316610715.

It is an arithmetic number, because the mean of its divisors is an integer number (213316610715).

Almost surely, 2^426633221429 is an apocalyptic number.

It is an amenable number.

426633221429 is a deficient number, since it is larger than the sum of its proper divisors (1).

426633221429 is an equidigital number, since it uses as much as digits as its factorization.

426633221429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 44.

The spelling of 426633221429 in words is "four hundred twenty-six billion, six hundred thirty-three million, two hundred twenty-one thousand, four hundred twenty-nine".