451440335020 has 12 divisors (see below), whose sum is σ = 948024703584. Its totient is φ = 180576134000.

The previous prime is 451440334931. The next prime is 451440335029. The reversal of 451440335020 is 20533044154.

It is not an unprimeable number, because it can be changed into a prime (451440335029) 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, 11286008356 + ... + 11286008395.

It is an arithmetic number, because the mean of its divisors is an integer number (79002058632).

Almost surely, 2^451440335020 is an apocalyptic number.

It is an amenable number.

451440335020 is an abundant number, since it is smaller than the sum of its proper divisors (496584368564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451440335020 is a wasteful number, since it uses less digits than its factorization.

451440335020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22572016760 (or 22572016758 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 451440335020 its reverse (20533044154), we get a palindrome (471973379174).

The spelling of 451440335020 in words is "four hundred fifty-one billion, four hundred forty million, three hundred thirty-five thousand, twenty".