451321142500 has 120 divisors (see below), whose sum is σ = 1067243772672. Its totient is φ = 166293312000.

The previous prime is 451321142411. The next prime is 451321142501. The reversal of 451321142500 is 5241123154.

It is not an unprimeable number, because it can be changed into a prime (451321142501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1884529 + ... + 2110471.

Almost surely, 2^451321142500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451321142500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533621886336).

451321142500 is an abundant number, since it is smaller than the sum of its proper divisors (615922630172).

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

451321142500 is a wasteful number, since it uses less digits than its factorization.

451321142500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226031 (or 226014 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 451321142500 its reverse (5241123154), we get a palindrome (456562265654).

The spelling of 451321142500 in words is "four hundred fifty-one billion, three hundred twenty-one million, one hundred forty-two thousand, five hundred".