426513230025221 has 2 divisors, whose sum is σ = 426513230025222. Its totient is φ = 426513230025220.

The previous prime is 426513230025187. The next prime is 426513230025241. The reversal of 426513230025221 is 122520032315624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217230309400225 + 209282920624996 = 14738735^2 + 14466614^2 .

It is a cyclic number.

It is not a de Polignac number, because 426513230025221 - 2¹⁰ = 426513230024197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426513230025241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213256615012610 + 213256615012611.

It is an arithmetic number, because the mean of its divisors is an integer number (213256615012611).

Almost surely, 2^{426513230025221} is an apocalyptic number.

It is an amenable number.

426513230025221 is a deficient number, since it is larger than the sum of its proper divisors (1).

426513230025221 is an equidigital number, since it uses as much as digits as its factorization.

426513230025221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 426513230025221 in words is "four hundred twenty-six trillion, five hundred thirteen billion, two hundred thirty million, twenty-five thousand, two hundred twenty-one".