451520623120 has 320 divisors, whose sum is σ = 1282587623424. Its totient is φ = 144480061440.

The previous prime is 451520623093. The next prime is 451520623133. The reversal of 451520623120 is 21326025154.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130382509 + ... + 130385971.

Almost surely, 2^451520623120 is an apocalyptic number.

451520623120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451520623120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641293811712).

451520623120 is an abundant number, since it is smaller than the sum of its proper divisors (831067000304).

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

451520623120 is a wasteful number, since it uses less digits than its factorization.

451520623120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750 (or 3744 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 451520623120 its reverse (21326025154), we get a palindrome (472846648274).

The spelling of 451520623120 in words is "four hundred fifty-one billion, five hundred twenty million, six hundred twenty-three thousand, one hundred twenty".