515503325623 has 24 divisors (see below), whose sum is σ = 616256278848. Its totient is φ = 428307000000.

The previous prime is 515503325621. The next prime is 515503325699. The reversal of 515503325623 is 326523305515.

It is not a de Polignac number, because 515503325623 - 2¹ = 515503325621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515503325621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1463503 + ... + 1781248.

It is an arithmetic number, because the mean of its divisors is an integer number (25677344952).

Almost surely, 2^515503325623 is an apocalyptic number.

515503325623 is a deficient number, since it is larger than the sum of its proper divisors (100752953225).

515503325623 is a wasteful number, since it uses less digits than its factorization.

515503325623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244887 (or 3244876 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 40.

The spelling of 515503325623 in words is "five hundred fifteen billion, five hundred three million, three hundred twenty-five thousand, six hundred twenty-three".