450421421523 has 8 divisors (see below), whose sum is σ = 600589840848. Its totient is φ = 300266974944.

The previous prime is 450421421491. The next prime is 450421421539. The reversal of 450421421523 is 325124124054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 450421421523 - 2⁵ = 450421421491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450421421573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3417736 + ... + 3547077.

It is an arithmetic number, because the mean of its divisors is an integer number (75073730106).

Almost surely, 2^450421421523 is an apocalyptic number.

450421421523 is a deficient number, since it is larger than the sum of its proper divisors (150168419325).

450421421523 is a wasteful number, since it uses less digits than its factorization.

450421421523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986373.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 450421421523 its reverse (325124124054), we get a palindrome (775545545577).

The spelling of 450421421523 in words is "four hundred fifty billion, four hundred twenty-one million, four hundred twenty-one thousand, five hundred twenty-three".