420313545204391 has 2 divisors, whose sum is σ = 420313545204392. Its totient is φ = 420313545204390.

The previous prime is 420313545204167. The next prime is 420313545204401. The reversal of 420313545204391 is 193402545313024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420313545204391 - 2¹³ = 420313545196199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420313545204491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210156772602195 + 210156772602196.

It is an arithmetic number, because the mean of its divisors is an integer number (210156772602196).

Almost surely, 2^{420313545204391} is an apocalyptic number.

420313545204391 is a deficient number, since it is larger than the sum of its proper divisors (1).

420313545204391 is an equidigital number, since it uses as much as digits as its factorization.

420313545204391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 420313545204391 in words is "four hundred twenty trillion, three hundred thirteen billion, five hundred forty-five million, two hundred four thousand, three hundred ninety-one".