16601656013 has 16 divisors (see below), whose sum is σ = 17928449280. Its totient is φ = 15325744896.

The previous prime is 16601655997. The next prime is 16601656061. The reversal of 16601656013 is 31065610661.

It is a cyclic number.

It is not a de Polignac number, because 16601656013 - 2⁴ = 16601655997 is a prime.

It is a super-2 number, since 2×16601656013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501656013) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2348981 + ... + 2356037.

It is an arithmetic number, because the mean of its divisors is an integer number (1120528080).

Almost surely, 2^16601656013 is an apocalyptic number.

It is an amenable number.

16601656013 is a deficient number, since it is larger than the sum of its proper divisors (1326793267).

16601656013 is a wasteful number, since it uses less digits than its factorization.

16601656013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 16601656013 in words is "sixteen billion, six hundred one million, six hundred fifty-six thousand, thirteen".