27727377371 has 4 divisors (see below), whose sum is σ = 27727820544. Its totient is φ = 27726934200.

The previous prime is 27727377361. The next prime is 27727377401. The reversal of 27727377371 is 17377372772.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27727377371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27727377361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108500 + ... + 259281.

It is an arithmetic number, because the mean of its divisors is an integer number (6931955136).

Almost surely, 2^27727377371 is an apocalyptic number.

27727377371 is a deficient number, since it is larger than the sum of its proper divisors (443173).

27727377371 is an equidigital number, since it uses as much as digits as its factorization.

27727377371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443172.

The product of its digits is 4235364, while the sum is 53.

The spelling of 27727377371 in words is "twenty-seven billion, seven hundred twenty-seven million, three hundred seventy-seven thousand, three hundred seventy-one".