27722347209 has 6 divisors (see below), whose sum is σ = 40043390426. Its totient is φ = 18481564800.

The previous prime is 27722347187. The next prime is 27722347217. The reversal of 27722347209 is 90274322772.

It can be written as a sum of positive squares in only one way, i.e., 18612599184 + 9109748025 = 136428^2 + 95445^2 .

It is not a de Polignac number, because 27722347209 - 2¹² = 27722343113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27722347229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1540130392 + ... + 1540130409.

Almost surely, 2^27722347209 is an apocalyptic number.

It is an amenable number.

27722347209 is a deficient number, since it is larger than the sum of its proper divisors (12321043217).

27722347209 is a wasteful number, since it uses less digits than its factorization.

27722347209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080260807 (or 3080260804 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 27722347209 in words is "twenty-seven billion, seven hundred twenty-two million, three hundred forty-seven thousand, two hundred nine".