27750475404 has 18 divisors (see below), whose sum is σ = 70147035140. Its totient is φ = 9250158456.

The previous prime is 27750475393. The next prime is 27750475421. The reversal of 27750475404 is 40457405772.

27750475404 is a `hidden beast` number, since 2 + 77 + 504 + 75 + 4 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 27750475404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 385423234 + ... + 385423305.

Almost surely, 2^27750475404 is an apocalyptic number.

It is an amenable number.

27750475404 is an abundant number, since it is smaller than the sum of its proper divisors (42396559736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27750475404 is a wasteful number, since it uses less digits than its factorization.

27750475404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770846549 (or 770846544 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 45.

The spelling of 27750475404 in words is "twenty-seven billion, seven hundred fifty million, four hundred seventy-five thousand, four hundred four".