16560618816 has 224 divisors, whose sum is σ = 53753552640. Its totient is φ = 4391829504.

The previous prime is 16560618803. The next prime is 16560618839. The reversal of 16560618816 is 61881606561.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1662940 + ... + 1672868.

Almost surely, 2^16560618816 is an apocalyptic number.

16560618816 is a gapful number since it is divisible by the number (16) 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 16560618816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26876776320).

16560618816 is an abundant number, since it is smaller than the sum of its proper divisors (37192933824).

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

16560618816 is a wasteful number, since it uses less digits than its factorization.

16560618816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041 (or 10031 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 16560618816 in words is "sixteen billion, five hundred sixty million, six hundred eighteen thousand, eight hundred sixteen".