27728636533 has 16 divisors (see below), whose sum is σ = 30767458176. Its totient is φ = 24823679040.

The previous prime is 27728636519. The next prime is 27728636543. The reversal of 27728636533 is 33563682772.

It is a cyclic number.

It is not a de Polignac number, because 27728636533 - 2¹⁷ = 27728505461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728636543) 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, 56910 + ... + 242272.

It is an arithmetic number, because the mean of its divisors is an integer number (1922966136).

Almost surely, 2^27728636533 is an apocalyptic number.

It is an amenable number.

27728636533 is a deficient number, since it is larger than the sum of its proper divisors (3038821643).

27728636533 is a wasteful number, since it uses less digits than its factorization.

27728636533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185724.

The product of its digits is 7620480, while the sum is 52.

The spelling of 27728636533 in words is "twenty-seven billion, seven hundred twenty-eight million, six hundred thirty-six thousand, five hundred thirty-three".