28643818105 has 8 divisors (see below), whose sum is σ = 39282950592. Its totient is φ = 19641475248.

The previous prime is 28643818081. The next prime is 28643818111. The reversal of 28643818105 is 50181834682.

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 28643818105 - 2⁷ = 28643817977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409197367 + ... + 409197436.

It is an arithmetic number, because the mean of its divisors is an integer number (4910368824).

Almost surely, 2^28643818105 is an apocalyptic number.

It is an amenable number.

28643818105 is a deficient number, since it is larger than the sum of its proper divisors (10639132487).

28643818105 is an equidigital number, since it uses as much as digits as its factorization.

28643818105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818394815.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 28643818105 in words is "twenty-eight billion, six hundred forty-three million, eight hundred eighteen thousand, one hundred five".