4511638272 has 72 divisors (see below), whose sum is σ = 12172175344. Its totient is φ = 1483259904.

The previous prime is 4511638267. The next prime is 4511638273. The reversal of 4511638272 is 2728361154.

It is a self number, because there is not a number n which added to its sum of digits gives 4511638272.

It is not an unprimeable number, because it can be changed into a prime (4511638273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15828 + ... + 96300.

Almost surely, 2^4511638272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4511638272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6086087672).

4511638272 is an abundant number, since it is smaller than the sum of its proper divisors (7660537072).

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

4511638272 is an equidigital number, since it uses as much as digits as its factorization.

4511638272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80565 (or 80551 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 4511638272 is about 67168.7298674018. The cubic root of 4511638272 is about 1652.3856854022.

The spelling of 4511638272 in words is "four billion, five hundred eleven million, six hundred thirty-eight thousand, two hundred seventy-two".