611172278317 has 2 divisors, whose sum is σ = 611172278318. Its totient is φ = 611172278316.

The previous prime is 611172278251. The next prime is 611172278351. The reversal of 611172278317 is 713872271116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410709229956 + 200463048361 = 640866^2 + 447731^2 .

It is a cyclic number.

It is not a de Polignac number, because 611172278317 - 2¹⁵ = 611172245549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611172273317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305586139158 + 305586139159.

It is an arithmetic number, because the mean of its divisors is an integer number (305586139159).

Almost surely, 2^611172278317 is an apocalyptic number.

It is an amenable number.

611172278317 is a deficient number, since it is larger than the sum of its proper divisors (1).

611172278317 is an equidigital number, since it uses as much as digits as its factorization.

611172278317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 46.

The spelling of 611172278317 in words is "six hundred eleven billion, one hundred seventy-two million, two hundred seventy-eight thousand, three hundred seventeen".