516878080322 has 50 divisors (see below), whose sum is σ = 837577275315. Its totient is φ = 239228284020.

The previous prime is 516878080321. The next prime is 516878080343. The reversal of 516878080322 is 223080878615.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 258439040161 + 258439040161 = 508369^2 + 508369^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=508369.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516878080321) 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 24 ways as a sum of consecutive naturals, for example, 16673486447 + ... + 16673486477.

Almost surely, 2^516878080322 is an apocalyptic number.

516878080322 is a deficient number, since it is larger than the sum of its proper divisors (320699194993).

516878080322 is an frugal number, since it uses more digits than its factorization.

516878080322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

Multiplying 516878080322 by its sum of digits (50), we get a square (25843904016100 = 5083690²).

The spelling of 516878080322 in words is "five hundred sixteen billion, eight hundred seventy-eight million, eighty thousand, three hundred twenty-two".