1421234663599 has 2 divisors, whose sum is σ = 1421234663600. Its totient is φ = 1421234663598.

The previous prime is 1421234663591. The next prime is 1421234663609. The reversal of 1421234663599 is 9953664321241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421234663599 - 2³ = 1421234663591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421234663591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710617331799 + 710617331800.

It is an arithmetic number, because the mean of its divisors is an integer number (710617331800).

Almost surely, 2^{1421234663599} is an apocalyptic number.

1421234663599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421234663599 is an equidigital number, since it uses as much as digits as its factorization.

1421234663599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 55.

The spelling of 1421234663599 in words is "one trillion, four hundred twenty-one billion, two hundred thirty-four million, six hundred sixty-three thousand, five hundred ninety-nine".