27708385864 has 16 divisors (see below), whose sum is σ = 51955545600. Its totient is φ = 13853573712.

The previous prime is 27708385801. The next prime is 27708385877. The reversal of 27708385864 is 46858380772.

It is a junction number, because it is equal to n+sod(n) for n = 27708385799 and 27708385808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153177 + ... + 280855.

It is an arithmetic number, because the mean of its divisors is an integer number (3247221600).

Almost surely, 2^27708385864 is an apocalyptic number.

It is an amenable number.

27708385864 is a deficient number, since it is larger than the sum of its proper divisors (24247159736).

27708385864 is a wasteful number, since it uses less digits than its factorization.

27708385864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154812 (or 154808 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 27708385864 in words is "twenty-seven billion, seven hundred eight million, three hundred eighty-five thousand, eight hundred sixty-four".