16804121946 has 16 divisors (see below), whose sum is σ = 34516575264. Its totient is φ = 5449985424.

The previous prime is 16804121881. The next prime is 16804121947. The reversal of 16804121946 is 64912140861.

It is a junction number, because it is equal to n+sod(n) for n = 16804121898 and 16804121907.

It is not an unprimeable number, because it can be changed into a prime (16804121947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37846900 + ... + 37847343.

It is an arithmetic number, because the mean of its divisors is an integer number (2157285954).

Almost surely, 2^16804121946 is an apocalyptic number.

16804121946 is an abundant number, since it is smaller than the sum of its proper divisors (17712453318).

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

16804121946 is a wasteful number, since it uses less digits than its factorization.

16804121946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75694285.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 16804121946 in words is "sixteen billion, eight hundred four million, one hundred twenty-one thousand, nine hundred forty-six".