16655566653 has 32 divisors (see below), whose sum is σ = 27574646400. Its totient is φ = 9848073600.

The previous prime is 16655566651. The next prime is 16655566661. The reversal of 16655566653 is 35666555661.

It is not a de Polignac number, because 16655566653 - 2¹ = 16655566651 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16655566653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16655566651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671718 + ... + 696071.

It is an arithmetic number, because the mean of its divisors is an integer number (861707700).

Almost surely, 2^16655566653 is an apocalyptic number.

It is an amenable number.

16655566653 is a deficient number, since it is larger than the sum of its proper divisors (10919079747).

16655566653 is a wasteful number, since it uses less digits than its factorization.

16655566653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367850 (or 1367844 counting only the distinct ones).

The product of its digits is 14580000, while the sum is 54.

The spelling of 16655566653 in words is "sixteen billion, six hundred fifty-five million, five hundred sixty-six thousand, six hundred fifty-three".