27505055069 has 2 divisors, whose sum is σ = 27505055070. Its totient is φ = 27505055068.

The previous prime is 27505055029. The next prime is 27505055087. The reversal of 27505055069 is 96055050572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21421835044 + 6083220025 = 146362^2 + 77995^2 .

It is a cyclic number.

It is not a de Polignac number, because 27505055069 - 2⁸ = 27505054813 is a prime.

It is a super-2 number, since 2×27505055069² (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 (27505055029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13752527534 + 13752527535.

It is an arithmetic number, because the mean of its divisors is an integer number (13752527535).

Almost surely, 2^27505055069 is an apocalyptic number.

It is an amenable number.

27505055069 is a deficient number, since it is larger than the sum of its proper divisors (1).

27505055069 is an equidigital number, since it uses as much as digits as its factorization.

27505055069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472500, while the sum is 44.

The spelling of 27505055069 in words is "twenty-seven billion, five hundred five million, fifty-five thousand, sixty-nine".