450781909369943 has 2 divisors, whose sum is σ = 450781909369944. Its totient is φ = 450781909369942.

The previous prime is 450781909369873. The next prime is 450781909369963. The reversal of 450781909369943 is 349963909187054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450781909369943 - 2¹⁸ = 450781909107799 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450781909369963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225390954684971 + 225390954684972.

It is an arithmetic number, because the mean of its divisors is an integer number (225390954684972).

Almost surely, 2^{450781909369943} is an apocalyptic number.

450781909369943 is a deficient number, since it is larger than the sum of its proper divisors (1).

450781909369943 is an equidigital number, since it uses as much as digits as its factorization.

450781909369943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587237120, while the sum is 77.

The spelling of 450781909369943 in words is "four hundred fifty trillion, seven hundred eighty-one billion, nine hundred nine million, three hundred sixty-nine thousand, nine hundred forty-three".