27720586671 has 8 divisors (see below), whose sum is σ = 38235292080. Its totient is φ = 17843136192.

The previous prime is 27720586669. The next prime is 27720586847. The reversal of 27720586671 is 17668502772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27720586671 - 2¹ = 27720586669 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27720586651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 159313630 + ... + 159313803.

It is an arithmetic number, because the mean of its divisors is an integer number (4779411510).

Almost surely, 2^27720586671 is an apocalyptic number.

27720586671 is a deficient number, since it is larger than the sum of its proper divisors (10514705409).

27720586671 is a wasteful number, since it uses less digits than its factorization.

27720586671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318627465.

The product of its (nonzero) digits is 1975680, while the sum is 51.

The spelling of 27720586671 in words is "twenty-seven billion, seven hundred twenty million, five hundred eighty-six thousand, six hundred seventy-one".