90211120163 has 2 divisors, whose sum is σ = 90211120164. Its totient is φ = 90211120162.

The previous prime is 90211120159. The next prime is 90211120213. The reversal of 90211120163 is 36102111209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90211120163 - 2² = 90211120159 is a prime.

It is not a weakly prime, because it can be changed into another prime (90211120663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45105560081 + 45105560082.

It is an arithmetic number, because the mean of its divisors is an integer number (45105560082).

Almost surely, 2^90211120163 is an apocalyptic number.

90211120163 is a deficient number, since it is larger than the sum of its proper divisors (1).

90211120163 is an equidigital number, since it uses as much as digits as its factorization.

90211120163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 90211120163 in words is "ninety billion, two hundred eleven million, one hundred twenty thousand, one hundred sixty-three".