440563503491 has 2 divisors, whose sum is σ = 440563503492. Its totient is φ = 440563503490.

The previous prime is 440563503473. The next prime is 440563503563. The reversal of 440563503491 is 194305365044.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440563503491 is a prime.

It is not a weakly prime, because it can be changed into another prime (440563503691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220281751745 + 220281751746.

It is an arithmetic number, because the mean of its divisors is an integer number (220281751746).

Almost surely, 2^440563503491 is an apocalyptic number.

440563503491 is a deficient number, since it is larger than the sum of its proper divisors (1).

440563503491 is an equidigital number, since it uses as much as digits as its factorization.

440563503491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 440563503491 in words is "four hundred forty billion, five hundred sixty-three million, five hundred three thousand, four hundred ninety-one".