16621922304 has 384 divisors, whose sum is σ = 55862352000. Its totient is φ = 4841275392.

The previous prime is 16621922263. The next prime is 16621922311. The reversal of 16621922304 is 40322912661.

It is a happy number.

16621922304 is a `hidden beast` number, since 1 + 6 + 621 + 9 + 2 + 23 + 0 + 4 = 666.

16621922304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13657504 + ... + 13658720.

It is an arithmetic number, because the mean of its divisors is an integer number (145474875).

Almost surely, 2^16621922304 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 16621922304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27931176000).

16621922304 is an abundant number, since it is smaller than the sum of its proper divisors (39240429696).

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

16621922304 is a wasteful number, since it uses less digits than its factorization.

16621922304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 16621922304 in words is "sixteen billion, six hundred twenty-one million, nine hundred twenty-two thousand, three hundred four".