421345277399 has 2 divisors, whose sum is σ = 421345277400. Its totient is φ = 421345277398.

The previous prime is 421345277377. The next prime is 421345277407. The reversal of 421345277399 is 993772543124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421345277399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421345277359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210672638699 + 210672638700.

It is an arithmetic number, because the mean of its divisors is an integer number (210672638700).

Almost surely, 2^421345277399 is an apocalyptic number.

421345277399 is a deficient number, since it is larger than the sum of its proper divisors (1).

421345277399 is an equidigital number, since it uses as much as digits as its factorization.

421345277399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 56.

The spelling of 421345277399 in words is "four hundred twenty-one billion, three hundred forty-five million, two hundred seventy-seven thousand, three hundred ninety-nine".