515040242404 has 12 divisors (see below), whose sum is σ = 901415999484. Its totient is φ = 257492813984.

The previous prime is 515040242393. The next prime is 515040242417. The reversal of 515040242404 is 404242040515.

It can be written as a sum of positive squares in 2 ways, for example, as 324560368804 + 190479873600 = 569702^2 + 436440^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6784339 + ... + 6859834.

It is an arithmetic number, because the mean of its divisors is an integer number (75117999957).

Almost surely, 2^515040242404 is an apocalyptic number.

It is an amenable number.

515040242404 is a deficient number, since it is larger than the sum of its proper divisors (386375757080).

515040242404 is a wasteful number, since it uses less digits than its factorization.

515040242404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13653614 (or 13653612 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 515040242404 its reverse (404242040515), we get a palindrome (919282282919).

The spelling of 515040242404 in words is "five hundred fifteen billion, forty million, two hundred forty-two thousand, four hundred four".