17057780197 has 2 divisors, whose sum is σ = 17057780198. Its totient is φ = 17057780196.

The previous prime is 17057780137. The next prime is 17057780227. The reversal of 17057780197 is 79108775071.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16906760676 + 151019521 = 130026^2 + 12289^2 .

It is a cyclic number.

It is not a de Polignac number, because 17057780197 - 2²³ = 17049391589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17057780107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8528890098 + 8528890099.

It is an arithmetic number, because the mean of its divisors is an integer number (8528890099).

Almost surely, 2^17057780197 is an apocalyptic number.

It is an amenable number.

17057780197 is a deficient number, since it is larger than the sum of its proper divisors (1).

17057780197 is an equidigital number, since it uses as much as digits as its factorization.

17057780197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864360, while the sum is 52.

The spelling of 17057780197 in words is "seventeen billion, fifty-seven million, seven hundred eighty thousand, one hundred ninety-seven".