27685906624 has 28 divisors (see below), whose sum is σ = 55268219664. Its totient is φ = 13760056064.

The previous prime is 27685906571. The next prime is 27685906627. The reversal of 27685906624 is 42660958672.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (27685906627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284499 + ... + 1305874.

It is an arithmetic number, because the mean of its divisors is an integer number (1973864988).

Almost surely, 2^27685906624 is an apocalyptic number.

It is an amenable number.

27685906624 is a deficient number, since it is larger than the sum of its proper divisors (27582313040).

27685906624 is a wasteful number, since it uses less digits than its factorization.

27685906624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590552 (or 2590542 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 27685906624 in words is "twenty-seven billion, six hundred eighty-five million, nine hundred six thousand, six hundred twenty-four".