509956558616 has 16 divisors (see below), whose sum is σ = 957728374800. Its totient is φ = 254562325344.

The previous prime is 509956558589. The next prime is 509956558621. The reversal of 509956558616 is 616855659905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51989036 + ... + 51998843.

It is an arithmetic number, because the mean of its divisors is an integer number (59858023425).

Almost surely, 2^509956558616 is an apocalyptic number.

It is an amenable number.

509956558616 is a deficient number, since it is larger than the sum of its proper divisors (447771816184).

509956558616 is a wasteful number, since it uses less digits than its factorization.

509956558616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103988498 (or 103988494 counting only the distinct ones).

The product of its (nonzero) digits is 87480000, while the sum is 65.

The spelling of 509956558616 in words is "five hundred nine billion, nine hundred fifty-six million, five hundred fifty-eight thousand, six hundred sixteen".