505561110541 has 2 divisors, whose sum is σ = 505561110542. Its totient is φ = 505561110540.

The previous prime is 505561110533. The next prime is 505561110581. The reversal of 505561110541 is 145011165505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496355475625 + 9205634916 = 704525^2 + 95946^2 .

It is a cyclic number.

It is not a de Polignac number, because 505561110541 - 2³ = 505561110533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505561110497 and 505561110506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505561110581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252780555270 + 252780555271.

It is an arithmetic number, because the mean of its divisors is an integer number (252780555271).

Almost surely, 2^505561110541 is an apocalyptic number.

It is an amenable number.

505561110541 is a deficient number, since it is larger than the sum of its proper divisors (1).

505561110541 is an equidigital number, since it uses as much as digits as its factorization.

505561110541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 505561110541 in words is "five hundred five billion, five hundred sixty-one million, one hundred ten thousand, five hundred forty-one".