421595628227 has 2 divisors, whose sum is σ = 421595628228. Its totient is φ = 421595628226.

The previous prime is 421595628143. The next prime is 421595628253. The reversal of 421595628227 is 722826595124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421595628227 - 2¹⁸ = 421595366083 is a prime.

It is not a weakly prime, because it can be changed into another prime (421595627227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210797814113 + 210797814114.

It is an arithmetic number, because the mean of its divisors is an integer number (210797814114).

Almost surely, 2^421595628227 is an apocalyptic number.

421595628227 is a deficient number, since it is larger than the sum of its proper divisors (1).

421595628227 is an equidigital number, since it uses as much as digits as its factorization.

421595628227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 53.

The spelling of 421595628227 in words is "four hundred twenty-one billion, five hundred ninety-five million, six hundred twenty-eight thousand, two hundred twenty-seven".