4550645440 has 168 divisors, whose sum is σ = 11988826416. Its totient is φ = 1643980800.

The previous prime is 4550645423. The next prime is 4550645441. The reversal of 4550645440 is 445460554.

It is a self number, because there is not a number n which added to its sum of digits gives 4550645440.

It is not an unprimeable number, because it can be changed into a prime (4550645441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8169642 + ... + 8170198.

It is an arithmetic number, because the mean of its divisors is an integer number (71362062).

Almost surely, 2^4550645440 is an apocalyptic number.

4550645440 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 4550645440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5994413208).

4550645440 is an abundant number, since it is smaller than the sum of its proper divisors (7438180976).

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

4550645440 is a wasteful number, since it uses less digits than its factorization.

4550645440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

The square root of 4550645440 is about 67458.4719660918. The cubic root of 4550645440 is about 1657.1341464918.

The spelling of 4550645440 in words is "four billion, five hundred fifty million, six hundred forty-five thousand, four hundred forty".