27641036869 has 2 divisors, whose sum is σ = 27641036870. Its totient is φ = 27641036868.

The previous prime is 27641036867. The next prime is 27641036879. The reversal of 27641036869 is 96863014672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21625173025 + 6015863844 = 147055^2 + 77562^2 .

It is a cyclic number.

It is not a de Polignac number, because 27641036869 - 2¹ = 27641036867 is a prime.

It is a super-2 number, since 2×27641036869² (a number of 22 digits) contains 22 as substring.

Together with 27641036867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27641036867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13820518434 + 13820518435.

It is an arithmetic number, because the mean of its divisors is an integer number (13820518435).

Almost surely, 2^27641036869 is an apocalyptic number.

It is an amenable number.

27641036869 is a deficient number, since it is larger than the sum of its proper divisors (1).

27641036869 is an equidigital number, since it uses as much as digits as its factorization.

27641036869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 27641036869 in words is "twenty-seven billion, six hundred forty-one million, thirty-six thousand, eight hundred sixty-nine".