27770887087 has 2 divisors, whose sum is σ = 27770887088. Its totient is φ = 27770887086.

The previous prime is 27770887073. The next prime is 27770887097. The reversal of 27770887087 is 78078807772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27770887087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27770887037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885443543 + 13885443544.

It is an arithmetic number, because the mean of its divisors is an integer number (13885443544).

Almost surely, 2^27770887087 is an apocalyptic number.

27770887087 is a deficient number, since it is larger than the sum of its proper divisors (1).

27770887087 is an equidigital number, since it uses as much as digits as its factorization.

27770887087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17210368, while the sum is 61.

The spelling of 27770887087 in words is "twenty-seven billion, seven hundred seventy million, eight hundred eighty-seven thousand, eighty-seven".