451021530423 has 8 divisors (see below), whose sum is σ = 601662880000. Its totient is φ = 300530600568.

The previous prime is 451021530397. The next prime is 451021530451. The reversal of 451021530423 is 324035120154.

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

It is not a de Polignac number, because 451021530423 - 2⁶ = 451021530359 is a prime.

It is a super-2 number, since 2×451021530423² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451021530493) 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, 37597933 + ... + 37609926.

It is an arithmetic number, because the mean of its divisors is an integer number (75207860000).

Almost surely, 2^451021530423 is an apocalyptic number.

451021530423 is a deficient number, since it is larger than the sum of its proper divisors (150641349577).

451021530423 is a wasteful number, since it uses less digits than its factorization.

451021530423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75209861.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 451021530423 its reverse (324035120154), we get a palindrome (775056650577).

The spelling of 451021530423 in words is "four hundred fifty-one billion, twenty-one million, five hundred thirty thousand, four hundred twenty-three".