16001604400 has 30 divisors (see below), whose sum is σ = 38443855532. Its totient is φ = 6400641600.

The previous prime is 16001604391. The next prime is 16001604401. The reversal of 16001604400 is 440610061.

16001604400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16001604401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20001606 + ... + 20002405.

Almost surely, 2^16001604400 is an apocalyptic number.

16001604400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16001604400 is an abundant number, since it is smaller than the sum of its proper divisors (22442251132).

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

16001604400 is a wasteful number, since it uses less digits than its factorization.

16001604400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40004029 (or 40004018 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 16001604400 in words is "sixteen billion, one million, six hundred four thousand, four hundred".