4516728681 has 4 divisors (see below), whose sum is σ = 6022304912. Its totient is φ = 3011152452.

The previous prime is 4516728679. The next prime is 4516728683. The reversal of 4516728681 is 1868276154.

4516728681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4516728679) and next prime (4516728683).

It is not a de Polignac number, because 4516728681 - 2¹ = 4516728679 is a prime.

It is a super-2 number, since 2×4516728681² = 40801675955535999522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4516728681.

It is not an unprimeable number, because it can be changed into a prime (4516728683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752788111 + ... + 752788116.

It is an arithmetic number, because the mean of its divisors is an integer number (1505576228).

Almost surely, 2^4516728681 is an apocalyptic number.

It is an amenable number.

4516728681 is a deficient number, since it is larger than the sum of its proper divisors (1505576231).

4516728681 is a wasteful number, since it uses less digits than its factorization.

4516728681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505576230.

The product of its digits is 645120, while the sum is 48.

The square root of 4516728681 is about 67206.6118845460. The cubic root of 4516728681 is about 1653.0069052331.

The spelling of 4516728681 in words is "four billion, five hundred sixteen million, seven hundred twenty-eight thousand, six hundred eighty-one".