27727755005 has 4 divisors (see below), whose sum is σ = 33273306012. Its totient is φ = 22182204000.

The previous prime is 27727754983. The next prime is 27727755023. The reversal of 27727755005 is 50055772772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20968777636 + 6758977369 = 144806^2 + 82213^2 .

It is not a de Polignac number, because 27727755005 - 2¹⁰ = 27727753981 is a prime.

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, 2772775496 + ... + 2772775505.

It is an arithmetic number, because the mean of its divisors is an integer number (8318326503).

Almost surely, 2^27727755005 is an apocalyptic number.

It is an amenable number.

27727755005 is a deficient number, since it is larger than the sum of its proper divisors (5545551007).

27727755005 is an equidigital number, since it uses as much as digits as its factorization.

27727755005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545551006.

The product of its (nonzero) digits is 1200500, while the sum is 47.

The spelling of 27727755005 in words is "twenty-seven billion, seven hundred twenty-seven million, seven hundred fifty-five thousand, five".