108910866168217 has 2 divisors, whose sum is σ = 108910866168218. Its totient is φ = 108910866168216.

The previous prime is 108910866168197. The next prime is 108910866168329. The reversal of 108910866168217 is 712861668019801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75539112872976 + 33371753295241 = 8691324^2 + 5776829^2 .

It is a cyclic number.

It is not a de Polignac number, because 108910866168217 - 2²³ = 108910857779609 is a prime.

It is a super-2 number, since 2×108910866168217² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (108910866168817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54455433084108 + 54455433084109.

It is an arithmetic number, because the mean of its divisors is an integer number (54455433084109).

Almost surely, 2^{108910866168217} is an apocalyptic number.

It is an amenable number.

108910866168217 is a deficient number, since it is larger than the sum of its proper divisors (1).

108910866168217 is an equidigital number, since it uses as much as digits as its factorization.

108910866168217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 64.

The spelling of 108910866168217 in words is "one hundred eight trillion, nine hundred ten billion, eight hundred sixty-six million, one hundred sixty-eight thousand, two hundred seventeen".