105989216197 has 2 divisors, whose sum is σ = 105989216198. Its totient is φ = 105989216196.

The previous prime is 105989216171. The next prime is 105989216303. The reversal of 105989216197 is 791612989501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102634373956 + 3354842241 = 320366^2 + 57921^2 .

It is a cyclic number.

It is not a de Polignac number, because 105989216197 - 2¹⁹ = 105988691909 is a prime.

It is a super-2 number, since 2×105989216197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105989216167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52994608098 + 52994608099.

It is an arithmetic number, because the mean of its divisors is an integer number (52994608099).

Almost surely, 2^105989216197 is an apocalyptic number.

It is an amenable number.

105989216197 is a deficient number, since it is larger than the sum of its proper divisors (1).

105989216197 is an equidigital number, since it uses as much as digits as its factorization.

105989216197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 58.

The spelling of 105989216197 in words is "one hundred five billion, nine hundred eighty-nine million, two hundred sixteen thousand, one hundred ninety-seven".