505556411797 has 2 divisors, whose sum is σ = 505556411798. Its totient is φ = 505556411796.

The previous prime is 505556411729. The next prime is 505556411809. The reversal of 505556411797 is 797114655505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505455590116 + 100821681 = 710954^2 + 10041^2 .

It is a cyclic number.

It is not a de Polignac number, because 505556411797 - 2³¹ = 503408928149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (575556411797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252778205898 + 252778205899.

It is an arithmetic number, because the mean of its divisors is an integer number (252778205899).

Almost surely, 2^505556411797 is an apocalyptic number.

It is an amenable number.

505556411797 is a deficient number, since it is larger than the sum of its proper divisors (1).

505556411797 is an equidigital number, since it uses as much as digits as its factorization.

505556411797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615000, while the sum is 55.

The spelling of 505556411797 in words is "five hundred five billion, five hundred fifty-six million, four hundred eleven thousand, seven hundred ninety-seven".