27804478473 has 64 divisors (see below), whose sum is σ = 42591744000. Its totient is φ = 17919600192.

The previous prime is 27804478463. The next prime is 27804478477. The reversal of 27804478473 is 37487440872.

27804478473 is a `hidden beast` number, since 27 + 80 + 4 + 4 + 78 + 473 = 666.

It is not a de Polignac number, because 27804478473 - 2⁸ = 27804478217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27804478477) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26760288 + ... + 26761326.

It is an arithmetic number, because the mean of its divisors is an integer number (665496000).

Almost surely, 2^27804478473 is an apocalyptic number.

It is an amenable number.

27804478473 is a deficient number, since it is larger than the sum of its proper divisors (14787265527).

27804478473 is a wasteful number, since it uses less digits than its factorization.

27804478473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371 (or 1365 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 54.

The spelling of 27804478473 in words is "twenty-seven billion, eight hundred four million, four hundred seventy-eight thousand, four hundred seventy-three".