27873569987 has 2 divisors, whose sum is σ = 27873569988. Its totient is φ = 27873569986.

The previous prime is 27873569963. The next prime is 27873570013. The reversal of 27873569987 is 78996537872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27873569987 - 2¹⁰ = 27873568963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27873569987.

It is not a weakly prime, because it can be changed into another prime (27873569947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13936784993 + 13936784994.

It is an arithmetic number, because the mean of its divisors is an integer number (13936784994).

Almost surely, 2^27873569987 is an apocalyptic number.

27873569987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27873569987 is an equidigital number, since it uses as much as digits as its factorization.

27873569987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320060160, while the sum is 71.

The spelling of 27873569987 in words is "twenty-seven billion, eight hundred seventy-three million, five hundred sixty-nine thousand, nine hundred eighty-seven".