16804947855 has 16 divisors (see below), whose sum is σ = 26890467840.
Its totient is φ = 8961788448.
The previous prime is 16804947829. The next prime is 16804947877. The reversal of 16804947855 is 55874940861.
It is not a de Polignac number, because 16804947855 - 29 = 16804947343 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 16804947795 and 16804947804.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130726 + ... + 225164.
It is an arithmetic number, because the mean of its divisors is an integer number (1680654240).
Almost surely, 216804947855 is an apocalyptic number.
16804947855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
16804947855 is a deficient number, since it is larger than the sum of its proper divisors (10085519985).
16804947855 is a wasteful number, since it uses less digits than its factorization.
16804947855 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 106310.
The product of its (nonzero) digits is 9676800, while the sum is 57.
The spelling of 16804947855 in words is "sixteen billion, eight hundred four million, nine hundred forty-seven thousand, eight hundred fifty-five".