27722950081 has 2 divisors, whose sum is σ = 27722950082. Its totient is φ = 27722950080.

The previous prime is 27722950009. The next prime is 27722950091. The reversal of 27722950081 is 18005922772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25307719056 + 2415231025 = 159084^2 + 49145^2 .

It is a cyclic number.

It is not a de Polignac number, because 27722950081 - 2¹⁷ = 27722819009 is a prime.

It is a super-2 number, since 2×27722950081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27722950001) 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 as a sum of consecutive naturals, namely, 13861475040 + 13861475041.

It is an arithmetic number, because the mean of its divisors is an integer number (13861475041).

Almost surely, 2^27722950081 is an apocalyptic number.

It is an amenable number.

27722950081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27722950081 is an equidigital number, since it uses as much as digits as its factorization.

27722950081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 27722950081 in words is "twenty-seven billion, seven hundred twenty-two million, nine hundred fifty thousand, eighty-one".