16561360060613 has 16 divisors (see below), whose sum is σ = 16950506601600. Its totient is φ = 16176667637760.

The previous prime is 16561360060589. The next prime is 16561360060627. The reversal of 16561360060613 is 31606006316561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16561360060613 - 2¹⁶ = 16561359995077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16561360063613) 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, 18324533 + ... + 19207061.

It is an arithmetic number, because the mean of its divisors is an integer number (1059406662600).

Almost surely, 2^{16561360060613} is an apocalyptic number.

It is an amenable number.

16561360060613 is a deficient number, since it is larger than the sum of its proper divisors (389146540987).

16561360060613 is a wasteful number, since it uses less digits than its factorization.

16561360060613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885052.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 16561360060613 in words is "sixteen trillion, five hundred sixty-one billion, three hundred sixty million, sixty thousand, six hundred thirteen".