515625207813 has 8 divisors (see below), whose sum is σ = 763889196800. Its totient is φ = 343750138524.

The previous prime is 515625207781. The next prime is 515625207833. The reversal of 515625207813 is 318702526515.

515625207813 is a `hidden beast` number, since 5 + 1 + 5 + 625 + 2 + 0 + 7 + 8 + 13 = 666.

It is not a de Polignac number, because 515625207813 - 2⁵ = 515625207781 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 (515625207833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9548614933 + ... + 9548614986.

It is an arithmetic number, because the mean of its divisors is an integer number (95486149600).

Almost surely, 2^515625207813 is an apocalyptic number.

It is an amenable number.

515625207813 is a deficient number, since it is larger than the sum of its proper divisors (248263988987).

515625207813 is a wasteful number, since it uses less digits than its factorization.

515625207813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19097229928 (or 19097229922 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 515625207813 in words is "five hundred fifteen billion, six hundred twenty-five million, two hundred seven thousand, eight hundred thirteen".