28566830601 has 20 divisors (see below), whose sum is σ = 42680278212. Its totient is φ = 19041710688.

The previous prime is 28566830561. The next prime is 28566830623. The reversal of 28566830601 is 10603866582.

28566830601 is a `hidden beast` number, since 2 + 8 + 5 + 6 + 6 + 8 + 30 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11395349001 + 17171481600 = 106749^2 + 131040^2 .

It is not a de Polignac number, because 28566830601 - 2⁷ = 28566830473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28566830701) 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 19 ways as a sum of consecutive naturals, for example, 615651 + ... + 660423.

Almost surely, 2^28566830601 is an apocalyptic number.

It is an amenable number.

28566830601 is a deficient number, since it is larger than the sum of its proper divisors (14113447611).

28566830601 is an equidigital number, since it uses as much as digits as its factorization.

28566830601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52662 (or 52653 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 28566830601 in words is "twenty-eight billion, five hundred sixty-six million, eight hundred thirty thousand, six hundred one".