16520986898 has 16 divisors (see below), whose sum is σ = 27086075520. Its totient is φ = 7511263056.

The previous prime is 16520986861. The next prime is 16520986921. The reversal of 16520986898 is 89868902561.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 16520986898.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4740218 + ... + 4743701.

It is an arithmetic number, because the mean of its divisors is an integer number (1692879720).

Almost surely, 2^16520986898 is an apocalyptic number.

16520986898 is a deficient number, since it is larger than the sum of its proper divisors (10565088622).

16520986898 is a wasteful number, since it uses less digits than its factorization.

16520986898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9484001.

The product of its (nonzero) digits is 14929920, while the sum is 62.

The spelling of 16520986898 in words is "sixteen billion, five hundred twenty million, nine hundred eighty-six thousand, eight hundred ninety-eight".