16508974720 has 384 divisors, whose sum is σ = 49240638720. Its totient is φ = 5180620800.

The previous prime is 16508974693. The next prime is 16508974831. The reversal of 16508974720 is 2747980561.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53083365 + ... + 53083675.

It is an arithmetic number, because the mean of its divisors is an integer number (128230830).

Almost surely, 2^16508974720 is an apocalyptic number.

16508974720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16508974720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24620319360).

16508974720 is an abundant number, since it is smaller than the sum of its proper divisors (32731664000).

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

16508974720 is a wasteful number, since it uses less digits than its factorization.

16508974720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 16508974720 in words is "sixteen billion, five hundred eight million, nine hundred seventy-four thousand, seven hundred twenty".