501342561217 has 2 divisors, whose sum is σ = 501342561218. Its totient is φ = 501342561216.

The previous prime is 501342561193. The next prime is 501342561263. The reversal of 501342561217 is 712165243105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327486085696 + 173856475521 = 572264^2 + 416961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501342561217 is a prime.

It is not a weakly prime, because it can be changed into another prime (501352561217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250671280608 + 250671280609.

It is an arithmetic number, because the mean of its divisors is an integer number (250671280609).

Almost surely, 2^501342561217 is an apocalyptic number.

It is an amenable number.

501342561217 is a deficient number, since it is larger than the sum of its proper divisors (1).

501342561217 is an equidigital number, since it uses as much as digits as its factorization.

501342561217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 501342561217 in words is "five hundred one billion, three hundred forty-two million, five hundred sixty-one thousand, two hundred seventeen".