5209918804828 has 12 divisors (see below), whose sum is σ = 9117429774880. Its totient is φ = 2604938869152.

The previous prime is 5209918804819. The next prime is 5209918804841. The reversal of 5209918804828 is 8284088199025.

It is a super-3 number, since 3×5209918804828³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 5209918804828.

It is a congruent number.

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, 4555188 + ... + 5582971.

Almost surely, 2^{5209918804828} is an apocalyptic number.

It is an amenable number.

5209918804828 is a deficient number, since it is larger than the sum of its proper divisors (3907510970052).

5209918804828 is a wasteful number, since it uses less digits than its factorization.

5209918804828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10266636 (or 10266634 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 64.

The spelling of 5209918804828 in words is "five trillion, two hundred nine billion, nine hundred eighteen million, eight hundred four thousand, eight hundred twenty-eight".