28205635755 has 48 divisors (see below), whose sum is σ = 51959280384. Its totient is φ = 12955671360.

The previous prime is 28205635751. The next prime is 28205635763. The reversal of 28205635755 is 55753650282.

It is not a de Polignac number, because 28205635755 - 2² = 28205635751 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28205635751) 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 47 ways as a sum of consecutive naturals, for example, 177199 + ... + 296328.

It is an arithmetic number, because the mean of its divisors is an integer number (1082485008).

Almost surely, 2^28205635755 is an apocalyptic number.

28205635755 is a deficient number, since it is larger than the sum of its proper divisors (23753644629).

28205635755 is a wasteful number, since it uses less digits than its factorization.

28205635755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473584 (or 473565 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 28205635755 in words is "twenty-eight billion, two hundred five million, six hundred thirty-five thousand, seven hundred fifty-five".