451431621152442 has 96 divisors (see below), whose sum is σ = 1120531093718400. Its totient is φ = 128668895017344.

The previous prime is 451431621152441. The next prime is 451431621152483. The reversal of 451431621152442 is 244251126134154.

451431621152442 is a `hidden beast` number, since 4 + 5 + 1 + 4 + 3 + 1 + 621 + 15 + 2 + 4 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (451431621152441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2178651988 + ... + 2178859184.

It is an arithmetic number, because the mean of its divisors is an integer number (11672198892900).

Almost surely, 2^{451431621152442} is an apocalyptic number.

451431621152442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

451431621152442 is an abundant number, since it is smaller than the sum of its proper divisors (669099472565958).

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

451431621152442 is a wasteful number, since it uses less digits than its factorization.

451431621152442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248900 (or 248897 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

Adding to 451431621152442 its reverse (244251126134154), we get a palindrome (695682747286596).

The spelling of 451431621152442 in words is "four hundred fifty-one trillion, four hundred thirty-one billion, six hundred twenty-one million, one hundred fifty-two thousand, four hundred forty-two".