27688045338169 has 2 divisors, whose sum is σ = 27688045338170. Its totient is φ = 27688045338168.

The previous prime is 27688045338097. The next prime is 27688045338199. The reversal of 27688045338169 is 96183354088672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21039073664569 + 6648971673600 = 4586837^2 + 2578560^2 .

It is a cyclic number.

It is not a de Polignac number, because 27688045338169 - 2²³ = 27688036949561 is a prime.

It is a super-2 number, since 2×27688045338169² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27688045338098 and 27688045338107.

It is not a weakly prime, because it can be changed into another prime (27688045338199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13844022669084 + 13844022669085.

It is an arithmetic number, because the mean of its divisors is an integer number (13844022669085).

It is a 1-persistent number, because it is pandigital, but 2⋅27688045338169 = 55376090676338 is not.

Almost surely, 2^{27688045338169} is an apocalyptic number.

It is an amenable number.

27688045338169 is a deficient number, since it is larger than the sum of its proper divisors (1).

27688045338169 is an equidigital number, since it uses as much as digits as its factorization.

27688045338169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 418037760, while the sum is 70.

The spelling of 27688045338169 in words is "twenty-seven trillion, six hundred eighty-eight billion, forty-five million, three hundred thirty-eight thousand, one hundred sixty-nine".