27505532869 has 2 divisors, whose sum is σ = 27505532870. Its totient is φ = 27505532868.

The previous prime is 27505532863. The next prime is 27505532903. The reversal of 27505532869 is 96823550572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25046860644 + 2458672225 = 158262^2 + 49585^2 .

It is a cyclic number.

It is not a de Polignac number, because 27505532869 - 2³ = 27505532861 is a prime.

It is a super-2 number, since 2×27505532869² (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 (27505532861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13752766434 + 13752766435.

It is an arithmetic number, because the mean of its divisors is an integer number (13752766435).

Almost surely, 2^27505532869 is an apocalyptic number.

It is an amenable number.

27505532869 is a deficient number, since it is larger than the sum of its proper divisors (1).

27505532869 is an equidigital number, since it uses as much as digits as its factorization.

27505532869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 27505532869 in words is "twenty-seven billion, five hundred five million, five hundred thirty-two thousand, eight hundred sixty-nine".