513344500243 has 2 divisors, whose sum is σ = 513344500244. Its totient is φ = 513344500242.

The previous prime is 513344500241. The next prime is 513344500309. The reversal of 513344500243 is 342005443315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513344500243 - 2¹ = 513344500241 is a prime.

Together with 513344500241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 513344500199 and 513344500208.

It is not a weakly prime, because it can be changed into another prime (513344500241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256672250121 + 256672250122.

It is an arithmetic number, because the mean of its divisors is an integer number (256672250122).

Almost surely, 2^513344500243 is an apocalyptic number.

513344500243 is a deficient number, since it is larger than the sum of its proper divisors (1).

513344500243 is an equidigital number, since it uses as much as digits as its factorization.

513344500243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 513344500243 its reverse (342005443315), we get a palindrome (855349943558).

The spelling of 513344500243 in words is "five hundred thirteen billion, three hundred forty-four million, five hundred thousand, two hundred forty-three".