16404755907 has 4 divisors (see below), whose sum is σ = 21873007880. Its totient is φ = 10936503936.

The previous prime is 16404755891. The next prime is 16404756019. The reversal of 16404755907 is 70955740461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70955740461 = 3 ⋅23651913487.

It is not a de Polignac number, because 16404755907 - 2⁴ = 16404755891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16404755207) 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 3 ways as a sum of consecutive naturals, for example, 2734125982 + ... + 2734125987.

It is an arithmetic number, because the mean of its divisors is an integer number (5468251970).

Almost surely, 2^16404755907 is an apocalyptic number.

16404755907 is a deficient number, since it is larger than the sum of its proper divisors (5468251973).

16404755907 is an equidigital number, since it uses as much as digits as its factorization.

16404755907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468251972.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 16404755907 in words is "sixteen billion, four hundred four million, seven hundred fifty-five thousand, nine hundred seven".