450643784427 has 12 divisors (see below), whose sum is σ = 652119917800. Its totient is φ = 299879955648.

The previous prime is 450643784413. The next prime is 450643784441. The reversal of 450643784427 is 724487346054.

450643784427 is a `hidden beast` number, since 4 + 50 + 64 + 37 + 84 + 427 = 666.

It is an interprime number because it is at equal distance from previous prime (450643784413) and next prime (450643784441).

It is not a de Polignac number, because 450643784427 - 2¹⁶ = 450643718891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450643784477) 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 in 11 ways as a sum of consecutive naturals, for example, 45764302 + ... + 45774147.

Almost surely, 2^450643784427 is an apocalyptic number.

450643784427 is a deficient number, since it is larger than the sum of its proper divisors (201476133373).

450643784427 is a wasteful number, since it uses less digits than its factorization.

450643784427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91539002 (or 91538999 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 54.

The spelling of 450643784427 in words is "four hundred fifty billion, six hundred forty-three million, seven hundred eighty-four thousand, four hundred twenty-seven".