513310360042 has 4 divisors (see below), whose sum is σ = 769965540066. Its totient is φ = 256655180020.

The previous prime is 513310360021. The next prime is 513310360067. The reversal of 513310360042 is 240063013315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240063013315 = 5 ⋅48012602663.

It can be written as a sum of positive squares in only one way, i.e., 504144020961 + 9166339081 = 710031^2 + 95741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128327590009 + ... + 128327590012.

Almost surely, 2^513310360042 is an apocalyptic number.

513310360042 is a deficient number, since it is larger than the sum of its proper divisors (256655180024).

513310360042 is a wasteful number, since it uses less digits than its factorization.

513310360042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256655180023.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 513310360042 its reverse (240063013315), we get a palindrome (753373373357).

The spelling of 513310360042 in words is "five hundred thirteen billion, three hundred ten million, three hundred sixty thousand, forty-two".