16560601308 has 120 divisors (see below), whose sum is σ = 43979221440. Its totient is φ = 5433246720.

The previous prime is 16560601307. The next prime is 16560601333. The reversal of 16560601308 is 80310606561.

It is a happy number.

16560601308 is a `hidden beast` number, since 1 + 6 + 560 + 60 + 1 + 30 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16560601301) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6948285 + ... + 6950667.

It is an arithmetic number, because the mean of its divisors is an integer number (366493512).

Almost surely, 2^16560601308 is an apocalyptic number.

16560601308 is a gapful number since it is divisible by the number (18) 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 16560601308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21989610720).

16560601308 is an abundant number, since it is smaller than the sum of its proper divisors (27418620132).

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

16560601308 is a wasteful number, since it uses less digits than its factorization.

16560601308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729 (or 2718 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 16560601308 its sum of digits (36), we get a square (16560601344 = 128688²).

The spelling of 16560601308 in words is "sixteen billion, five hundred sixty million, six hundred one thousand, three hundred eight".