611109783197 has 2 divisors, whose sum is σ = 611109783198. Its totient is φ = 611109783196.

The previous prime is 611109783161. The next prime is 611109783217. The reversal of 611109783197 is 791387901116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 585498902041 + 25610881156 = 765179^2 + 160034^2 .

It is a cyclic number.

It is not a de Polignac number, because 611109783197 - 2¹⁸ = 611109521053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611109783127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305554891598 + 305554891599.

It is an arithmetic number, because the mean of its divisors is an integer number (305554891599).

Almost surely, 2^611109783197 is an apocalyptic number.

It is an amenable number.

611109783197 is a deficient number, since it is larger than the sum of its proper divisors (1).

611109783197 is an equidigital number, since it uses as much as digits as its factorization.

611109783197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 53.

The spelling of 611109783197 in words is "six hundred eleven billion, one hundred nine million, seven hundred eighty-three thousand, one hundred ninety-seven".