450533305021 has 4 divisors (see below), whose sum is σ = 450537379200. Its totient is φ = 450529230844.

The previous prime is 450533304979. The next prime is 450533305049. The reversal of 450533305021 is 120503335054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450533305021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450533309021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1866451 + ... + 2093968.

It is an arithmetic number, because the mean of its divisors is an integer number (112634344800).

Almost surely, 2^450533305021 is an apocalyptic number.

It is an amenable number.

450533305021 is a deficient number, since it is larger than the sum of its proper divisors (4074179).

450533305021 is a wasteful number, since it uses less digits than its factorization.

450533305021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074178.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 450533305021 in words is "four hundred fifty billion, five hundred thirty-three million, three hundred five thousand, twenty-one".