506325356771789 has 2 divisors, whose sum is σ = 506325356771790. Its totient is φ = 506325356771788.

The previous prime is 506325356771723. The next prime is 506325356771887. The reversal of 506325356771789 is 987177653523605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 485095471163689 + 21229885608100 = 22024883^2 + 4607590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506325356771789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506325356771489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253162678385894 + 253162678385895.

It is an arithmetic number, because the mean of its divisors is an integer number (253162678385895).

Almost surely, 2^{506325356771789} is an apocalyptic number.

It is an amenable number.

506325356771789 is a deficient number, since it is larger than the sum of its proper divisors (1).

506325356771789 is an equidigital number, since it uses as much as digits as its factorization.

506325356771789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000376000, while the sum is 74.

The spelling of 506325356771789 in words is "five hundred six trillion, three hundred twenty-five billion, three hundred fifty-six million, seven hundred seventy-one thousand, seven hundred eighty-nine".