4540719721 has 16 divisors (see below), whose sum is σ = 4704382800. Its totient is φ = 4380563200.

The previous prime is 4540719697. The next prime is 4540719749. The reversal of 4540719721 is 1279170454.

It can be written as a sum of positive squares in 8 ways, for example, as 2676496 + 4538043225 = 1636^2 + 67365^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540719721 - 2¹³ = 4540711529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540719791) 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, 794751 + ... + 800443.

It is an arithmetic number, because the mean of its divisors is an integer number (294023925).

Almost surely, 2^4540719721 is an apocalyptic number.

It is an amenable number.

4540719721 is a deficient number, since it is larger than the sum of its proper divisors (163663079).

4540719721 is a wasteful number, since it uses less digits than its factorization.

4540719721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 4540719721 is about 67384.8626992739. The cubic root of 4540719721 is about 1655.9284405169.

The spelling of 4540719721 in words is "four billion, five hundred forty million, seven hundred nineteen thousand, seven hundred twenty-one".