27756625668 has 48 divisors (see below), whose sum is σ = 65874708480. Its totient is φ = 9094778784.

The previous prime is 27756625649. The next prime is 27756625681. The reversal of 27756625668 is 86652665772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150705 + ... + 279687.

It is an arithmetic number, because the mean of its divisors is an integer number (1372389760).

Almost surely, 2^27756625668 is an apocalyptic number.

It is an amenable number.

27756625668 is an abundant number, since it is smaller than the sum of its proper divisors (38118082812).

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

27756625668 is a wasteful number, since it uses less digits than its factorization.

27756625668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129296 (or 129294 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 60.

The spelling of 27756625668 in words is "twenty-seven billion, seven hundred fifty-six million, six hundred twenty-five thousand, six hundred sixty-eight".