16804121907 has 8 divisors (see below), whose sum is σ = 22406376384. Its totient is φ = 11202307688.

The previous prime is 16804121881. The next prime is 16804121947. The reversal of 16804121907 is 70912140861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16804121907 - 2¹⁶ = 16804056371 is a prime.

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, 7293 + ... + 183470.

It is an arithmetic number, because the mean of its divisors is an integer number (2800797048).

Almost surely, 2^16804121907 is an apocalyptic number.

16804121907 is a deficient number, since it is larger than the sum of its proper divisors (5602254477).

16804121907 is a wasteful number, since it uses less digits than its factorization.

16804121907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220129.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 16804121907 in words is "sixteen billion, eight hundred four million, one hundred twenty-one thousand, nine hundred seven".