255231221759 has 2 divisors, whose sum is σ = 255231221760. Its totient is φ = 255231221758.

The previous prime is 255231221711. The next prime is 255231221771. The reversal of 255231221759 is 957122132552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255231221759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255231221359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127615610879 + 127615610880.

It is an arithmetic number, because the mean of its divisors is an integer number (127615610880).

Almost surely, 2^255231221759 is an apocalyptic number.

255231221759 is a deficient number, since it is larger than the sum of its proper divisors (1).

255231221759 is an equidigital number, since it uses as much as digits as its factorization.

255231221759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 44.

The spelling of 255231221759 in words is "two hundred fifty-five billion, two hundred thirty-one million, two hundred twenty-one thousand, seven hundred fifty-nine".