745321422400 has 189 divisors, whose sum is σ = 1860068165683. Its totient is φ = 293943193600.

The previous prime is 745321422389. The next prime is 745321422403. The reversal of 745321422400 is 4224123547.

The square root of 745321422400 is 863320.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 379189934656 + 366131487744 = 615784^2 + 605088^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745321422403) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3902206305 + ... + 3902206495.

Almost surely, 2^745321422400 is an apocalyptic number.

745321422400 is the 863320-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745321422400

745321422400 is an abundant number, since it is smaller than the sum of its proper divisors (1114746743283).

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

745321422400 is an equidigital number, since it uses as much as digits as its factorization.

745321422400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

Adding to 745321422400 its reverse (4224123547), we get a palindrome (749545545947).

The spelling of 745321422400 in words is "seven hundred forty-five billion, three hundred twenty-one million, four hundred twenty-two thousand, four hundred".