28861693066539 has 16 divisors (see below), whose sum is σ = 42758343568800. Its totient is φ = 19241002816128.

The previous prime is 28861693066519. The next prime is 28861693066639. The reversal of 28861693066539 is 93566039616882.

28861693066539 is a `hidden beast` number, since 2 + 8 + 86 + 1 + 6 + 9 + 3 + 0 + 6 + 6 + 539 = 666.

It is not a de Polignac number, because 28861693066539 - 2²⁴ = 28861676289323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28861693066519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801967 + ... + 7639799.

It is an arithmetic number, because the mean of its divisors is an integer number (2672396473050).

Almost surely, 2^{28861693066539} is an apocalyptic number.

28861693066539 is a deficient number, since it is larger than the sum of its proper divisors (13896650502261).

28861693066539 is a wasteful number, since it uses less digits than its factorization.

28861693066539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994171 (or 6994165 counting only the distinct ones).

The product of its (nonzero) digits is 604661760, while the sum is 72.

The spelling of 28861693066539 in words is "twenty-eight trillion, eight hundred sixty-one billion, six hundred ninety-three million, sixty-six thousand, five hundred thirty-nine".