255121264589 has 2 divisors, whose sum is σ = 255121264590. Its totient is φ = 255121264588.

The previous prime is 255121264501. The next prime is 255121264633. The reversal of 255121264589 is 985462121552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198314355625 + 56806908964 = 445325^2 + 238342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255121264589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255121264289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127560632294 + 127560632295.

It is an arithmetic number, because the mean of its divisors is an integer number (127560632295).

Almost surely, 2^255121264589 is an apocalyptic number.

It is an amenable number.

255121264589 is a deficient number, since it is larger than the sum of its proper divisors (1).

255121264589 is an equidigital number, since it uses as much as digits as its factorization.

255121264589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728000, while the sum is 50.

The spelling of 255121264589 in words is "two hundred fifty-five billion, one hundred twenty-one million, two hundred sixty-four thousand, five hundred eighty-nine".