16561061150001 has 16 divisors (see below), whose sum is σ = 22092483624000. Its totient is φ = 11035173492288.

The previous prime is 16561061149951. The next prime is 16561061150009. The reversal of 16561061150001 is 10005116016561.

It is not a de Polignac number, because 16561061150001 - 2³⁰ = 16559987408177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16561061150009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229732975 + ... + 229805051.

It is an arithmetic number, because the mean of its divisors is an integer number (1380780226500).

Almost surely, 2^{16561061150001} is an apocalyptic number.

It is an amenable number.

16561061150001 is a deficient number, since it is larger than the sum of its proper divisors (5531422473999).

16561061150001 is a wasteful number, since it uses less digits than its factorization.

16561061150001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109408.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 16561061150001 its reverse (10005116016561), we get a palindrome (26566177166562).

The spelling of 16561061150001 in words is "sixteen trillion, five hundred sixty-one billion, sixty-one million, one hundred fifty thousand, one".