28580552785 has 8 divisors (see below), whose sum is σ = 34629641280. Its totient is φ = 22642456944.

The previous prime is 28580552783. The next prime is 28580552839. The reversal of 28580552785 is 58725508582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28580552785 - 2¹ = 28580552783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28580552783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27747595 + ... + 27748624.

It is an arithmetic number, because the mean of its divisors is an integer number (4328705160).

Almost surely, 2^28580552785 is an apocalyptic number.

It is an amenable number.

28580552785 is a deficient number, since it is larger than the sum of its proper divisors (6049088495).

28580552785 is a wasteful number, since it uses less digits than its factorization.

28580552785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55496327.

The product of its (nonzero) digits is 8960000, while the sum is 55.

The spelling of 28580552785 in words is "twenty-eight billion, five hundred eighty million, five hundred fifty-two thousand, seven hundred eighty-five".