27191755055 has 4 divisors (see below), whose sum is σ = 32630106072. Its totient is φ = 21753404040.

The previous prime is 27191755039. The next prime is 27191755061. The reversal of 27191755055 is 55055719172.

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

It is not a de Polignac number, because 27191755055 - 2⁴ = 27191755039 is a prime.

It is a super-2 number, since 2×27191755055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2719175501 + ... + 2719175510.

It is an arithmetic number, because the mean of its divisors is an integer number (8157526518).

Almost surely, 2^27191755055 is an apocalyptic number.

27191755055 is a deficient number, since it is larger than the sum of its proper divisors (5438351017).

27191755055 is an equidigital number, since it uses as much as digits as its factorization.

27191755055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5438351016.

The product of its (nonzero) digits is 551250, while the sum is 47.

The spelling of 27191755055 in words is "twenty-seven billion, one hundred ninety-one million, seven hundred fifty-five thousand, fifty-five".