27750475655 has 32 divisors (see below), whose sum is σ = 38740377600. Its totient is φ = 18688234752.

The previous prime is 27750475651. The next prime is 27750475663. The reversal of 27750475655 is 55657405772.

It is a cyclic number.

It is not a de Polignac number, because 27750475655 - 2² = 27750475651 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 27750475597 and 27750475606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27750475651) 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 31 ways as a sum of consecutive naturals, for example, 2325434 + ... + 2337336.

It is an arithmetic number, because the mean of its divisors is an integer number (1210636800).

Almost surely, 2^27750475655 is an apocalyptic number.

27750475655 is a deficient number, since it is larger than the sum of its proper divisors (10989901945).

27750475655 is a wasteful number, since it uses less digits than its factorization.

27750475655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13103.

The product of its (nonzero) digits is 10290000, while the sum is 53.

The spelling of 27750475655 in words is "twenty-seven billion, seven hundred fifty million, four hundred seventy-five thousand, six hundred fifty-five".