27722998911 has 4 divisors (see below), whose sum is σ = 36963998552. Its totient is φ = 18481999272.

The previous prime is 27722998907. The next prime is 27722998913. The reversal of 27722998911 is 11989922772.

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

It is not a de Polignac number, because 27722998911 - 2² = 27722998907 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 (27722998913) 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, 4620499816 + ... + 4620499821.

It is an arithmetic number, because the mean of its divisors is an integer number (9240999638).

Almost surely, 2^27722998911 is an apocalyptic number.

27722998911 is a deficient number, since it is larger than the sum of its proper divisors (9240999641).

27722998911 is an equidigital number, since it uses as much as digits as its factorization.

27722998911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240999640.

The product of its digits is 2286144, while the sum is 57.

The spelling of 27722998911 in words is "twenty-seven billion, seven hundred twenty-two million, nine hundred ninety-eight thousand, nine hundred eleven".