452278044840 has 128 divisors (see below), whose sum is σ = 1368346705920. Its totient is φ = 119587104000.

The previous prime is 452278044767. The next prime is 452278044847. The reversal of 452278044840 is 48440872254.

It is a self number, because there is not a number n which added to its sum of digits gives 452278044840.

It is not an unprimeable number, because it can be changed into a prime (452278044847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9888825 + ... + 9934455.

It is an arithmetic number, because the mean of its divisors is an integer number (10690208640).

Almost surely, 2^452278044840 is an apocalyptic number.

452278044840 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 452278044840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684173352960).

452278044840 is an abundant number, since it is smaller than the sum of its proper divisors (916068661080).

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

452278044840 is a wasteful number, since it uses less digits than its factorization.

452278044840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46343 (or 46339 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 48.

The spelling of 452278044840 in words is "four hundred fifty-two billion, two hundred seventy-eight million, forty-four thousand, eight hundred forty".