617116350371861 has 2 divisors, whose sum is σ = 617116350371862. Its totient is φ = 617116350371860.

The previous prime is 617116350371839. The next prime is 617116350371881. The reversal of 617116350371861 is 168173053611716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 530413603104100 + 86702747267761 = 23030710^2 + 9311431^2 .

It is a cyclic number.

It is not a de Polignac number, because 617116350371861 - 2¹⁸ = 617116350109717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 617116350371797 and 617116350371806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617116350371881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308558175185930 + 308558175185931.

It is an arithmetic number, because the mean of its divisors is an integer number (308558175185931).

Almost surely, 2^{617116350371861} is an apocalyptic number.

It is an amenable number.

617116350371861 is a deficient number, since it is larger than the sum of its proper divisors (1).

617116350371861 is an equidigital number, since it uses as much as digits as its factorization.

617116350371861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 617116350371861 in words is "six hundred seventeen trillion, one hundred sixteen billion, three hundred fifty million, three hundred seventy-one thousand, eight hundred sixty-one".