27606000666 has 16 divisors (see below), whose sum is σ = 55421936064. Its totient is φ = 9167011104.

The previous prime is 27606000637. The next prime is 27606000673. The reversal of 27606000666 is 66600060672.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8745571 + ... + 8748726.

It is an arithmetic number, because the mean of its divisors is an integer number (3463871004).

Almost surely, 2^27606000666 is an apocalyptic number.

27606000666 is an abundant number, since it is smaller than the sum of its proper divisors (27815935398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27606000666 is a wasteful number, since it uses less digits than its factorization.

27606000666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17494565.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 27606000666 in words is "twenty-seven billion, six hundred six million, six hundred sixty-six", and thus it is an aban number.