4581728816085 has 32 divisors (see below), whose sum is σ = 8245854898560. Its totient is φ = 2443588696080.

The previous prime is 4581728816069. The next prime is 4581728816087. The reversal of 4581728816085 is 5806188271854.

4581728816085 is a `hidden beast` number, since 4 + 5 + 8 + 17 + 2 + 8 + 8 + 1 + 608 + 5 = 666.

It is not a de Polignac number, because 4581728816085 - 2⁴ = 4581728816069 is a prime.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 209487411 + ... + 209509280.

It is an arithmetic number, because the mean of its divisors is an integer number (257682965580).

Almost surely, 2^{4581728816085} is an apocalyptic number.

4581728816085 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4581728816085 is a deficient number, since it is larger than the sum of its proper divisors (3664126082475).

4581728816085 is an frugal number, since it uses more digits than its factorization.

4581728816085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418996717 (or 418996699 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 63.

The spelling of 4581728816085 in words is "four trillion, five hundred eighty-one billion, seven hundred twenty-eight million, eight hundred sixteen thousand, eighty-five".