27740666127 has 4 divisors (see below), whose sum is σ = 36987554840. Its totient is φ = 18493777416.

The previous prime is 27740666117. The next prime is 27740666209. The reversal of 27740666127 is 72166604772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27740666127 - 2¹¹ = 27740664079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27740666117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4623444352 + ... + 4623444357.

It is an arithmetic number, because the mean of its divisors is an integer number (9246888710).

Almost surely, 2^27740666127 is an apocalyptic number.

27740666127 is a deficient number, since it is larger than the sum of its proper divisors (9246888713).

27740666127 is an equidigital number, since it uses as much as digits as its factorization.

27740666127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246888712.

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 27740666127 in words is "twenty-seven billion, seven hundred forty million, six hundred sixty-six thousand, one hundred twenty-seven".