27061243669 has 2 divisors, whose sum is σ = 27061243670. Its totient is φ = 27061243668.

The previous prime is 27061243609. The next prime is 27061243717. The reversal of 27061243669 is 96634216072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26272195569 + 789048100 = 162087^2 + 28090^2 .

It is a cyclic number.

It is not a de Polignac number, because 27061243669 - 2²⁵ = 27027689237 is a prime.

It is a super-2 number, since 2×27061243669² (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 (27061243609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13530621834 + 13530621835.

It is an arithmetic number, because the mean of its divisors is an integer number (13530621835).

Almost surely, 2^27061243669 is an apocalyptic number.

It is an amenable number.

27061243669 is a deficient number, since it is larger than the sum of its proper divisors (1).

27061243669 is an equidigital number, since it uses as much as digits as its factorization.

27061243669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 27061243669 in words is "twenty-seven billion, sixty-one million, two hundred forty-three thousand, six hundred sixty-nine".