520453744516457 has 2 divisors, whose sum is σ = 520453744516458. Its totient is φ = 520453744516456.

The previous prime is 520453744516417. The next prime is 520453744516469. The reversal of 520453744516457 is 754615447354025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517503306192601 + 2950438323856 = 22748699^2 + 1717684^2 .

It is a cyclic number.

It is not a de Polignac number, because 520453744516457 - 2²⁰ = 520453743467881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520453744516457.

It is not a weakly prime, because it can be changed into another prime (520453744516417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260226872258228 + 260226872258229.

It is an arithmetic number, because the mean of its divisors is an integer number (260226872258229).

Almost surely, 2^{520453744516457} is an apocalyptic number.

It is an amenable number.

520453744516457 is a deficient number, since it is larger than the sum of its proper divisors (1).

520453744516457 is an equidigital number, since it uses as much as digits as its factorization.

520453744516457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240000, while the sum is 62.

The spelling of 520453744516457 in words is "five hundred twenty trillion, four hundred fifty-three billion, seven hundred forty-four million, five hundred sixteen thousand, four hundred fifty-seven".