27647308664 has 8 divisors (see below), whose sum is σ = 51838703760. Its totient is φ = 13823654328.

The previous prime is 27647308657. The next prime is 27647308673. The reversal of 27647308664 is 46680374672.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1727956784 + ... + 1727956799.

It is an arithmetic number, because the mean of its divisors is an integer number (6479837970).

Almost surely, 2^27647308664 is an apocalyptic number.

It is an amenable number.

27647308664 is a deficient number, since it is larger than the sum of its proper divisors (24191395096).

27647308664 is a wasteful number, since it uses less digits than its factorization.

27647308664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455913589 (or 3455913585 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 53.

The spelling of 27647308664 in words is "twenty-seven billion, six hundred forty-seven million, three hundred eight thousand, six hundred sixty-four".