16560438104 has 96 divisors (see below), whose sum is σ = 37267776000. Its totient is φ = 6757455936.

The previous prime is 16560438101. The next prime is 16560438119. The reversal of 16560438104 is 40183406561.

It is a super-2 number, since 2×16560438104² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16560438101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7078967 + ... + 7081305.

It is an arithmetic number, because the mean of its divisors is an integer number (388206000).

Almost surely, 2^16560438104 is an apocalyptic number.

16560438104 is a gapful number since it is divisible by the number (14) 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 16560438104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18633888000).

16560438104 is an abundant number, since it is smaller than the sum of its proper divisors (20707337896).

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

16560438104 is a wasteful number, since it uses less digits than its factorization.

16560438104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 16560438104 in words is "sixteen billion, five hundred sixty million, four hundred thirty-eight thousand, one hundred four".