420664430603 has 2 divisors, whose sum is σ = 420664430604. Its totient is φ = 420664430602.

The previous prime is 420664430539. The next prime is 420664430611. The reversal of 420664430603 is 306034466024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420664430603 - 2⁶ = 420664430539 is a prime.

It is not a weakly prime, because it can be changed into another prime (420664430503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210332215301 + 210332215302.

It is an arithmetic number, because the mean of its divisors is an integer number (210332215302).

Almost surely, 2^420664430603 is an apocalyptic number.

420664430603 is a deficient number, since it is larger than the sum of its proper divisors (1).

420664430603 is an equidigital number, since it uses as much as digits as its factorization.

420664430603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 420664430603 its reverse (306034466024), we get a palindrome (726698896627).

The spelling of 420664430603 in words is "four hundred twenty billion, six hundred sixty-four million, four hundred thirty thousand, six hundred three".