5613009721 has 16 divisors (see below), whose sum is σ = 6176937600. Its totient is φ = 5058218880.

The previous prime is 5613009719. The next prime is 5613009749. The reversal of 5613009721 is 1279003165.

It is not a de Polignac number, because 5613009721 - 2¹ = 5613009719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5613009791) 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, 601725 + ... + 610981.

It is an arithmetic number, because the mean of its divisors is an integer number (386058600).

Almost surely, 2^5613009721 is an apocalyptic number.

It is an amenable number.

5613009721 is a deficient number, since it is larger than the sum of its proper divisors (563927879).

5613009721 is a wasteful number, since it uses less digits than its factorization.

5613009721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 5613009721 is about 74920.0221636379. The cubic root of 5613009721 is about 1777.1821046293.

The spelling of 5613009721 in words is "five billion, six hundred thirteen million, nine thousand, seven hundred twenty-one".