557307361861 has 2 divisors, whose sum is σ = 557307361862. Its totient is φ = 557307361860.

The previous prime is 557307361843. The next prime is 557307361927. The reversal of 557307361861 is 168163703755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539812008961 + 17495352900 = 734719^2 + 132270^2 .

It is a cyclic number.

It is not a de Polignac number, because 557307361861 - 2¹¹ = 557307359813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 557307361799 and 557307361808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557307361841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278653680930 + 278653680931.

It is an arithmetic number, because the mean of its divisors is an integer number (278653680931).

Almost surely, 2^557307361861 is an apocalyptic number.

It is an amenable number.

557307361861 is a deficient number, since it is larger than the sum of its proper divisors (1).

557307361861 is an equidigital number, since it uses as much as digits as its factorization.

557307361861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 557307361861 in words is "five hundred fifty-seven billion, three hundred seven million, three hundred sixty-one thousand, eight hundred sixty-one".