513535442243 has 2 divisors, whose sum is σ = 513535442244. Its totient is φ = 513535442242.

The previous prime is 513535442219. The next prime is 513535442257. The reversal of 513535442243 is 342244535315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513535442243 - 2⁸ = 513535441987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513535442243.

It is not a weakly prime, because it can be changed into another prime (513535442843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256767721121 + 256767721122.

It is an arithmetic number, because the mean of its divisors is an integer number (256767721122).

Almost surely, 2^513535442243 is an apocalyptic number.

513535442243 is a deficient number, since it is larger than the sum of its proper divisors (1).

513535442243 is an equidigital number, since it uses as much as digits as its factorization.

513535442243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 41.

Adding to 513535442243 its reverse (342244535315), we get a palindrome (855779977558).

The spelling of 513535442243 in words is "five hundred thirteen billion, five hundred thirty-five million, four hundred forty-two thousand, two hundred forty-three".