515020340104 has 8 divisors (see below), whose sum is σ = 965663137710. Its totient is φ = 257510170048.

The previous prime is 515020340099. The next prime is 515020340147. The reversal of 515020340104 is 401043020515.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 308902524100 + 206117816004 = 555790^2 + 454002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 32188771249 + ... + 32188771264.

Almost surely, 2^515020340104 is an apocalyptic number.

It is an amenable number.

515020340104 is a deficient number, since it is larger than the sum of its proper divisors (450642797606).

515020340104 is a wasteful number, since it uses less digits than its factorization.

515020340104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64377542519 (or 64377542515 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 515020340104 its reverse (401043020515), we get a palindrome (916063360619).

The spelling of 515020340104 in words is "five hundred fifteen billion, twenty million, three hundred forty thousand, one hundred four".