28805480065 has 16 divisors (see below), whose sum is σ = 34923178368. Its totient is φ = 22806919296.

The previous prime is 28805480063. The next prime is 28805480107. The reversal of 28805480065 is 56008450882.

It is a cyclic number.

It is not a de Polignac number, because 28805480065 - 2¹ = 28805480063 is a prime.

It is a super-2 number, since 2×28805480065² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28805479997 and 28805480024.

It is not an unprimeable number, because it can be changed into a prime (28805480063) 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, 886842 + ... + 918748.

It is an arithmetic number, because the mean of its divisors is an integer number (2182698648).

Almost surely, 2^28805480065 is an apocalyptic number.

It is an amenable number.

28805480065 is a deficient number, since it is larger than the sum of its proper divisors (6117698303).

28805480065 is a wasteful number, since it uses less digits than its factorization.

28805480065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33768.

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 28805480065 in words is "twenty-eight billion, eight hundred five million, four hundred eighty thousand, sixty-five".