426524927209 has 2 divisors, whose sum is σ = 426524927210. Its totient is φ = 426524927208.

The previous prime is 426524927177. The next prime is 426524927237. The reversal of 426524927209 is 902729425624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400977699984 + 25547227225 = 633228^2 + 159835^2 .

It is a cyclic number.

It is not a de Polignac number, because 426524927209 - 2⁵ = 426524927177 is a prime.

It is not a weakly prime, because it can be changed into another prime (426524921209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213262463604 + 213262463605.

It is an arithmetic number, because the mean of its divisors is an integer number (213262463605).

Almost surely, 2^426524927209 is an apocalyptic number.

It is an amenable number.

426524927209 is a deficient number, since it is larger than the sum of its proper divisors (1).

426524927209 is an equidigital number, since it uses as much as digits as its factorization.

426524927209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 426524927209 in words is "four hundred twenty-six billion, five hundred twenty-four million, nine hundred twenty-seven thousand, two hundred nine".