506242286868391 has 2 divisors, whose sum is σ = 506242286868392. Its totient is φ = 506242286868390.

The previous prime is 506242286868301. The next prime is 506242286868397. The reversal of 506242286868391 is 193868682242605.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 506242286868391 - 2¹¹ = 506242286866343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 506242286868391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506242286868397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253121143434195 + 253121143434196.

It is an arithmetic number, because the mean of its divisors is an integer number (253121143434196).

Almost surely, 2^{506242286868391} is an apocalyptic number.

506242286868391 is a deficient number, since it is larger than the sum of its proper divisors (1).

506242286868391 is an equidigital number, since it uses as much as digits as its factorization.

506242286868391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 477757440, while the sum is 70.

The spelling of 506242286868391 in words is "five hundred six trillion, two hundred forty-two billion, two hundred eighty-six million, eight hundred sixty-eight thousand, three hundred ninety-one".