515902867064 has 64 divisors (see below), whose sum is σ = 1061392701600. Its totient is φ = 233641672704.

The previous prime is 515902867043. The next prime is 515902867091. The reversal of 515902867064 is 460768209515.

It is a junction number, because it is equal to n+sod(n) for n = 515902866997 and 515902867015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1646732 + ... + 1934820.

Almost surely, 2^515902867064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515902867064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530696350800).

515902867064 is an abundant number, since it is smaller than the sum of its proper divisors (545489834536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515902867064 is a wasteful number, since it uses less digits than its factorization.

515902867064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288432 (or 288428 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 515902867064 in words is "five hundred fifteen billion, nine hundred two million, eight hundred sixty-seven thousand, sixty-four".