27936120169 has 2 divisors, whose sum is σ = 27936120170. Its totient is φ = 27936120168.

The previous prime is 27936120143. The next prime is 27936120193. The reversal of 27936120169 is 96102163972.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24337560025 + 3598560144 = 156005^2 + 59988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27936120169 is a prime.

It is a super-2 number, since 2×27936120169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27936124169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13968060084 + 13968060085.

It is an arithmetic number, because the mean of its divisors is an integer number (13968060085).

Almost surely, 2^27936120169 is an apocalyptic number.

It is an amenable number.

27936120169 is a deficient number, since it is larger than the sum of its proper divisors (1).

27936120169 is an equidigital number, since it uses as much as digits as its factorization.

27936120169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 27936120169 in words is "twenty-seven billion, nine hundred thirty-six million, one hundred twenty thousand, one hundred sixty-nine".