450471669921 has 480 divisors, whose sum is σ = 930552741888. Its totient is φ = 211102536960.

The previous prime is 450471669919. The next prime is 450471669937. The reversal of 450471669921 is 129966174054.

450471669921 is a `hidden beast` number, since 4 + 5 + 0 + 471 + 66 + 99 + 21 = 666.

It is not a de Polignac number, because 450471669921 - 2¹ = 450471669919 is a prime.

It is a super-2 number, since 2×450471669921² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (450471669971) by changing a digit.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 3547020960 + ... + 3547021086.

Almost surely, 2^450471669921 is an apocalyptic number.

It is an amenable number.

450471669921 is an abundant number, since it is smaller than the sum of its proper divisors (480081071967).

450471669921 is a wasteful number, since it uses less digits than its factorization.

450471669921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 450471669921 in words is "four hundred fifty billion, four hundred seventy-one million, six hundred sixty-nine thousand, nine hundred twenty-one".