509620743816 has 16 divisors (see below), whose sum is σ = 1274051859600. Its totient is φ = 169873581264.

The previous prime is 509620743773. The next prime is 509620743833. The reversal of 509620743816 is 618347026905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10617098806 + ... + 10617098853.

It is an arithmetic number, because the mean of its divisors is an integer number (79628241225).

It is a 1-persistent number, because it is pandigital, but 2⋅509620743816 = 1019241487632 is not.

Almost surely, 2^509620743816 is an apocalyptic number.

It is an amenable number.

509620743816 is an abundant number, since it is smaller than the sum of its proper divisors (764431115784).

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

509620743816 is a wasteful number, since it uses less digits than its factorization.

509620743816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21234197668 (or 21234197664 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 509620743816 in words is "five hundred nine billion, six hundred twenty million, seven hundred forty-three thousand, eight hundred sixteen".