16506551304 has 160 divisors (see below), whose sum is σ = 47512634400. Its totient is φ = 5351961600.

The previous prime is 16506551263. The next prime is 16506551317. The reversal of 16506551304 is 40315560561.

16506551304 is a `hidden beast` number, since 16 + 506 + 5 + 5 + 130 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3706279 + ... + 3710729.

It is an arithmetic number, because the mean of its divisors is an integer number (296953965).

Almost surely, 2^16506551304 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 16506551304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23756317200).

16506551304 is an abundant number, since it is smaller than the sum of its proper divisors (31006083096).

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

16506551304 is a wasteful number, since it uses less digits than its factorization.

16506551304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625 (or 4612 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 16506551304 in words is "sixteen billion, five hundred six million, five hundred fifty-one thousand, three hundred four".