16680239104 has 45 divisors (see below), whose sum is σ = 33392554797. Its totient is φ = 8331853824.

The previous prime is 16680239089. The next prime is 16680239179. The reversal of 16680239104 is 40193208661.

The square root of 16680239104 is 129152.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5119688704 + 11560550400 = 71552^2 + 107520^2 .

It is a super-2 number, since 2×16680239104² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16530952 + ... + 16531960.

Almost surely, 2^16680239104 is an apocalyptic number.

16680239104 is the 129152-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16680239104

16680239104 is an abundant number, since it is smaller than the sum of its proper divisors (16712315693).

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

16680239104 is an frugal number, since it uses more digits than its factorization.

16680239104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 16680239104 in words is "sixteen billion, six hundred eighty million, two hundred thirty-nine thousand, one hundred four".