513334143561 has 16 divisors (see below), whose sum is σ = 714348988416. Its totient is φ = 327277070736.

The previous prime is 513334143533. The next prime is 513334143563. The reversal of 513334143561 is 165341433315.

It is not a de Polignac number, because 513334143561 - 2⁷ = 513334143433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513334143563) 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 in 15 ways as a sum of consecutive naturals, for example, 411475 + ... + 1093608.

It is an arithmetic number, because the mean of its divisors is an integer number (44646811776).

Almost surely, 2^513334143561 is an apocalyptic number.

It is an amenable number.

513334143561 is a deficient number, since it is larger than the sum of its proper divisors (201014844855).

513334143561 is a wasteful number, since it uses less digits than its factorization.

513334143561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510052.

The product of its digits is 194400, while the sum is 39.

Adding to 513334143561 its reverse (165341433315), we get a palindrome (678675576876).

The spelling of 513334143561 in words is "five hundred thirteen billion, three hundred thirty-four million, one hundred forty-three thousand, five hundred sixty-one".