4513720640 has 112 divisors (see below), whose sum is σ = 12627498240. Its totient is φ = 1515079680.

The previous prime is 4513720639. The next prime is 4513720649. The reversal of 4513720640 is 460273154.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 4513720597 and 4513720606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4513720649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3560 + ... + 95079.

It is an arithmetic number, because the mean of its divisors is an integer number (112745520).

Almost surely, 2^4513720640 is an apocalyptic number.

4513720640 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 4513720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6313749120).

4513720640 is an abundant number, since it is smaller than the sum of its proper divisors (8113777600).

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

4513720640 is a wasteful number, since it uses less digits than its factorization.

4513720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98680 (or 98670 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 4513720640 is about 67184.2291017766. The cubic root of 4513720640 is about 1652.6398684446.

Adding to 4513720640 its reverse (460273154), we get a palindrome (4973993794).

The spelling of 4513720640 in words is "four billion, five hundred thirteen million, seven hundred twenty thousand, six hundred forty".