4509949994550 has 576 divisors, whose sum is σ = 17225626489344. Its totient is φ = 814158950400.

The previous prime is 4509949994521. The next prime is 4509949994551. The reversal of 4509949994550 is 554999499054.

4509949994550 is a `hidden beast` number, since 4 + 5 + 0 + 99 + 499 + 9 + 45 + 5 + 0 = 666.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4509949994551) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 7363177 + ... + 7952123.

It is an arithmetic number, because the mean of its divisors is an integer number (29905601544).

Almost surely, 2^{4509949994550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4509949994550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8612813244672).

4509949994550 is an abundant number, since it is smaller than the sum of its proper divisors (12715676494794).

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

4509949994550 is a wasteful number, since it uses less digits than its factorization.

4509949994550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589013 (or 589005 counting only the distinct ones).

The product of its (nonzero) digits is 472392000, while the sum is 72.

The spelling of 4509949994550 in words is "four trillion, five hundred nine billion, nine hundred forty-nine million, nine hundred ninety-four thousand, five hundred fifty".