16804785204495 has 96 divisors (see below), whose sum is σ = 30984928071552. Its totient is φ = 8396246900736.

The previous prime is 16804785204481. The next prime is 16804785204511. The reversal of 16804785204495 is 59440258740861.

It is a happy number.

16804785204495 is a `hidden beast` number, since 1 + 6 + 8 + 0 + 47 + 85 + 20 + 4 + 495 = 666.

It is a Cunningham number, because it is equal to 4099364²-1.

It is a de Polignac number, because none of the positive numbers 2^k-16804785204495 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 184425787 + ... + 184516883.

It is an arithmetic number, because the mean of its divisors is an integer number (322759667412).

Almost surely, 2^{16804785204495} is an apocalyptic number.

16804785204495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16804785204495 is a deficient number, since it is larger than the sum of its proper divisors (14180142867057).

16804785204495 is a wasteful number, since it uses less digits than its factorization.

16804785204495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92241 (or 92238 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 16804785204495 in words is "sixteen trillion, eight hundred four billion, seven hundred eighty-five million, two hundred four thousand, four hundred ninety-five".