557744462861 has 2 divisors, whose sum is σ = 557744462862. Its totient is φ = 557744462860.

The previous prime is 557744462839. The next prime is 557744462903. The reversal of 557744462861 is 168264447755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528638055625 + 29106407236 = 727075^2 + 170606^2 .

It is a cyclic number.

It is not a de Polignac number, because 557744462861 - 2⁶ = 557744462797 is a prime.

It is a super-2 number, since 2×557744462861² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 557744462861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557744462801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278872231430 + 278872231431.

It is an arithmetic number, because the mean of its divisors is an integer number (278872231431).

Almost surely, 2^557744462861 is an apocalyptic number.

It is an amenable number.

557744462861 is a deficient number, since it is larger than the sum of its proper divisors (1).

557744462861 is an equidigital number, since it uses as much as digits as its factorization.

557744462861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45158400, while the sum is 59.

The spelling of 557744462861 in words is "five hundred fifty-seven billion, seven hundred forty-four million, four hundred sixty-two thousand, eight hundred sixty-one".