4581728816089 has 4 divisors (see below), whose sum is σ = 4592611782820. Its totient is φ = 4570845849360.

The previous prime is 4581728816087. The next prime is 4581728816101. The reversal of 4581728816089 is 9806188271854.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1767078369225 + 2814650446864 = 1329315^2 + 1677692^2 .

It is a cyclic number.

It is not a de Polignac number, because 4581728816089 - 2¹ = 4581728816087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4581728816087) 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, 5441482734 + ... + 5441483575.

It is an arithmetic number, because the mean of its divisors is an integer number (1148152945705).

Almost surely, 2^{4581728816089} is an apocalyptic number.

It is an amenable number.

4581728816089 is a deficient number, since it is larger than the sum of its proper divisors (10882966731).

4581728816089 is a wasteful number, since it uses less digits than its factorization.

4581728816089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882966730.

The product of its (nonzero) digits is 61931520, while the sum is 67.

The spelling of 4581728816089 in words is "four trillion, five hundred eighty-one billion, seven hundred twenty-eight million, eight hundred sixteen thousand, eighty-nine".