28566504959 has 8 divisors (see below), whose sum is σ = 30071558640. Its totient is φ = 27061606656.

The previous prime is 28566504917. The next prime is 28566504961. The reversal of 28566504959 is 95940566582.

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 28566504959 - 2¹⁶ = 28566439423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28566504898 and 28566504907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28566504979) 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, 676367 + ... + 717359.

It is an arithmetic number, because the mean of its divisors is an integer number (3758944830).

Almost surely, 2^28566504959 is an apocalyptic number.

28566504959 is a deficient number, since it is larger than the sum of its proper divisors (1505053681).

28566504959 is a wasteful number, since it uses less digits than its factorization.

28566504959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77689.

The product of its (nonzero) digits is 23328000, while the sum is 59.

The spelling of 28566504959 in words is "twenty-eight billion, five hundred sixty-six million, five hundred four thousand, nine hundred fifty-nine".