513605361442 has 8 divisors (see below), whose sum is σ = 774664440732. Its totient is φ = 255383881200.

The previous prime is 513605361439. The next prime is 513605361457. The reversal of 513605361442 is 244163506315.

It can be written as a sum of positive squares in 2 ways, for example, as 284823948721 + 228781412721 = 533689^2 + 478311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 513605361395 and 513605361404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709399309 + ... + 709400032.

Almost surely, 2^513605361442 is an apocalyptic number.

513605361442 is a deficient number, since it is larger than the sum of its proper divisors (261059079290).

513605361442 is a wasteful number, since it uses less digits than its factorization.

513605361442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418799524.

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 513605361442 its reverse (244163506315), we get a palindrome (757768867757).

The spelling of 513605361442 in words is "five hundred thirteen billion, six hundred five million, three hundred sixty-one thousand, four hundred forty-two".