16722037520 has 80 divisors (see below), whose sum is σ = 40059303600. Its totient is φ = 6486884352.

The previous prime is 16722037477. The next prime is 16722037523. The reversal of 16722037520 is 2573022761.

It can be written as a sum of positive squares in 8 ways, for example, as 1478656 + 16720558864 = 1216^2 + 129308^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (16722037523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917456 + ... + 935504.

It is an arithmetic number, because the mean of its divisors is an integer number (500741295).

Almost surely, 2^16722037520 is an apocalyptic number.

16722037520 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 16722037520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20029651800).

16722037520 is an abundant number, since it is smaller than the sum of its proper divisors (23337266080).

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

16722037520 is a wasteful number, since it uses less digits than its factorization.

16722037520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18412 (or 18406 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 16722037520 in words is "sixteen billion, seven hundred twenty-two million, thirty-seven thousand, five hundred twenty".