16393003904 has 64 divisors (see below), whose sum is σ = 32929284240. Its totient is φ = 8128659456.

The previous prime is 16393003897. The next prime is 16393003927. The reversal of 16393003904 is 40930039361.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12776447 + ... + 12777729.

Almost surely, 2^16393003904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16393003904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16464642120).

16393003904 is an abundant number, since it is smaller than the sum of its proper divisors (16536280336).

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

16393003904 is a wasteful number, since it uses less digits than its factorization.

16393003904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2035 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 38.

The spelling of 16393003904 in words is "sixteen billion, three hundred ninety-three million, three thousand, nine hundred four".