16560288121 has 8 divisors (see below), whose sum is σ = 18609554880. Its totient is φ = 14621792592.

The previous prime is 16560288083. The next prime is 16560288131. The reversal of 16560288121 is 12188206561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16560288121 - 2²¹ = 16558190969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16560288131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27692491 + ... + 27693088.

It is an arithmetic number, because the mean of its divisors is an integer number (2326194360).

Almost surely, 2^16560288121 is an apocalyptic number.

It is an amenable number.

16560288121 is a deficient number, since it is larger than the sum of its proper divisors (2049266759).

16560288121 is a wasteful number, since it uses less digits than its factorization.

16560288121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55385615.

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 16560288121 in words is "sixteen billion, five hundred sixty million, two hundred eighty-eight thousand, one hundred twenty-one".