27647354161 has 8 divisors (see below), whose sum is σ = 31608748160. Its totient is φ = 23688903168.

The previous prime is 27647354117. The next prime is 27647354179. The reversal of 27647354161 is 16145374672.

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

It is a de Polignac number, because none of the positive numbers 2^k-27647354161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27647354191) 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, 715581 + ... + 753226.

It is an arithmetic number, because the mean of its divisors is an integer number (3951093520).

Almost surely, 2^27647354161 is an apocalyptic number.

It is an amenable number.

27647354161 is a deficient number, since it is larger than the sum of its proper divisors (3961393999).

27647354161 is a wasteful number, since it uses less digits than its factorization.

27647354161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471503.

The product of its digits is 846720, while the sum is 46.

It can be divided in two parts, 2764735 and 4161, that added together give a square (2768896 = 1664²).

The spelling of 27647354161 in words is "twenty-seven billion, six hundred forty-seven million, three hundred fifty-four thousand, one hundred sixty-one".