27790221163 has 2 divisors, whose sum is σ = 27790221164. Its totient is φ = 27790221162.

The previous prime is 27790221149. The next prime is 27790221187. The reversal of 27790221163 is 36112209772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27790221163 - 2⁵ = 27790221131 is a prime.

It is not a weakly prime, because it can be changed into another prime (27790221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13895110581 + 13895110582.

It is an arithmetic number, because the mean of its divisors is an integer number (13895110582).

Almost surely, 2^27790221163 is an apocalyptic number.

27790221163 is a deficient number, since it is larger than the sum of its proper divisors (1).

27790221163 is an equidigital number, since it uses as much as digits as its factorization.

27790221163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 27790221163 in words is "twenty-seven billion, seven hundred ninety million, two hundred twenty-one thousand, one hundred sixty-three".