27664138055 has 16 divisors (see below), whose sum is σ = 34592382720. Its totient is φ = 21212174592.

The previous prime is 27664138027. The next prime is 27664138067. The reversal of 27664138055 is 55083146672.

It is a cyclic number.

It is not a de Polignac number, because 27664138055 - 2⁸ = 27664137799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676439 + ... + 716168.

It is an arithmetic number, because the mean of its divisors is an integer number (2162023920).

Almost surely, 2^27664138055 is an apocalyptic number.

27664138055 is a deficient number, since it is larger than the sum of its proper divisors (6928244665).

27664138055 is a wasteful number, since it uses less digits than its factorization.

27664138055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392778.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 27664138055 in words is "twenty-seven billion, six hundred sixty-four million, one hundred thirty-eight thousand, fifty-five".