28524410665 has 4 divisors (see below), whose sum is σ = 34229292804. Its totient is φ = 22819528528.

The previous prime is 28524410627. The next prime is 28524410699. The reversal of 28524410665 is 56601442582.

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 15195246361 + 13329164304 = 123269^2 + 115452^2 .

It is a cyclic number.

It is not a de Polignac number, because 28524410665 - 2²¹ = 28522313513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852441062 + ... + 2852441071.

It is an arithmetic number, because the mean of its divisors is an integer number (8557323201).

Almost surely, 2^28524410665 is an apocalyptic number.

It is an amenable number.

28524410665 is a deficient number, since it is larger than the sum of its proper divisors (5704882139).

28524410665 is an equidigital number, since it uses as much as digits as its factorization.

28524410665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704882138.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 28524410665 in words is "twenty-eight billion, five hundred twenty-four million, four hundred ten thousand, six hundred sixty-five".