27555648191 has 8 divisors (see below), whose sum is σ = 27954054144. Its totient is φ = 27157528440.

The previous prime is 27555648181. The next prime is 27555648227. The reversal of 27555648191 is 19184655572.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27555648191 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 (27555648101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126326 + ... + 266588.

It is an arithmetic number, because the mean of its divisors is an integer number (3494256768).

Almost surely, 2^27555648191 is an apocalyptic number.

27555648191 is a deficient number, since it is larger than the sum of its proper divisors (398405953).

27555648191 is a wasteful number, since it uses less digits than its factorization.

27555648191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143101.

The product of its digits is 3024000, while the sum is 53.

The spelling of 27555648191 in words is "twenty-seven billion, five hundred fifty-five million, six hundred forty-eight thousand, one hundred ninety-one".