108891494317 has 2 divisors, whose sum is σ = 108891494318. Its totient is φ = 108891494316.

The previous prime is 108891494293. The next prime is 108891494347. The reversal of 108891494317 is 713494198801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105192543556 + 3698950761 = 324334^2 + 60819^2 .

It is a cyclic number.

It is not a de Polignac number, because 108891494317 - 2⁷ = 108891494189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108891494347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54445747158 + 54445747159.

It is an arithmetic number, because the mean of its divisors is an integer number (54445747159).

Almost surely, 2^108891494317 is an apocalyptic number.

It is an amenable number.

108891494317 is a deficient number, since it is larger than the sum of its proper divisors (1).

108891494317 is an equidigital number, since it uses as much as digits as its factorization.

108891494317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 108891494317 in words is "one hundred eight billion, eight hundred ninety-one million, four hundred ninety-four thousand, three hundred seventeen".