27771246101 has 2 divisors, whose sum is σ = 27771246102. Its totient is φ = 27771246100.

The previous prime is 27771246073. The next prime is 27771246149. The reversal of 27771246101 is 10164217772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27511198225 + 260047876 = 165865^2 + 16126^2 .

It is a cyclic number.

It is not a de Polignac number, because 27771246101 - 2⁶ = 27771246037 is a prime.

It is a super-2 number, since 2×27771246101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27771246301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885623050 + 13885623051.

It is an arithmetic number, because the mean of its divisors is an integer number (13885623051).

Almost surely, 2^27771246101 is an apocalyptic number.

It is an amenable number.

27771246101 is a deficient number, since it is larger than the sum of its proper divisors (1).

27771246101 is an equidigital number, since it uses as much as digits as its factorization.

27771246101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 38.

The spelling of 27771246101 in words is "twenty-seven billion, seven hundred seventy-one million, two hundred forty-six thousand, one hundred one".