561060116557 has 2 divisors, whose sum is σ = 561060116558. Its totient is φ = 561060116556.

The previous prime is 561060116549. The next prime is 561060116623. The reversal of 561060116557 is 755611060165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457806504996 + 103253611561 = 676614^2 + 321331^2 .

It is a cyclic number.

It is not a de Polignac number, because 561060116557 - 2³ = 561060116549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561060114557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280530058278 + 280530058279.

It is an arithmetic number, because the mean of its divisors is an integer number (280530058279).

Almost surely, 2^561060116557 is an apocalyptic number.

It is an amenable number.

561060116557 is a deficient number, since it is larger than the sum of its proper divisors (1).

561060116557 is an equidigital number, since it uses as much as digits as its factorization.

561060116557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 561060116557 in words is "five hundred sixty-one billion, sixty million, one hundred sixteen thousand, five hundred fifty-seven".