28055835643 has 16 divisors (see below), whose sum is σ = 32266354176. Its totient is φ = 24144848640.

The previous prime is 28055835629. The next prime is 28055835649. The reversal of 28055835643 is 34653855082.

It is not a de Polignac number, because 28055835643 - 2¹³ = 28055827451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28055835649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547071 + ... + 596152.

It is an arithmetic number, because the mean of its divisors is an integer number (2016647136).

Almost surely, 2^28055835643 is an apocalyptic number.

28055835643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28055835643 is a deficient number, since it is larger than the sum of its proper divisors (4210518533).

28055835643 is a wasteful number, since it uses less digits than its factorization.

28055835643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143354.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 28055835643 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-five thousand, six hundred forty-three".