516601999840 has 96 divisors (see below), whose sum is σ = 1275022135296. Its totient is φ = 197565473280.

The previous prime is 516601999831. The next prime is 516601999919. The reversal of 516601999840 is 48999106615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215752 + ... + 1039111.

It is an arithmetic number, because the mean of its divisors is an integer number (13281480576).

Almost surely, 2^516601999840 is an apocalyptic number.

It is an amenable number.

516601999840 is an abundant number, since it is smaller than the sum of its proper divisors (758420135456).

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

516601999840 is a wasteful number, since it uses less digits than its factorization.

516601999840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254992 (or 1254984 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 58.

The spelling of 516601999840 in words is "five hundred sixteen billion, six hundred one million, nine hundred ninety-nine thousand, eight hundred forty".