16655800855661 has 24 divisors (see below), whose sum is σ = 18560143752192. Its totient is φ = 14932818331200.

The previous prime is 16655800855651. The next prime is 16655800855667.

16655800855661 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 16655800855661 - 2³⁰ = 16654727113837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16655800855594 and 16655800855603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16655800855667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100710740 + ... + 100875986.

It is an arithmetic number, because the mean of its divisors is an integer number (773339323008).

Almost surely, 2^{16655800855661} is an apocalyptic number.

16655800855661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16655800855661 is a deficient number, since it is larger than the sum of its proper divisors (1904342896531).

16655800855661 is a wasteful number, since it uses less digits than its factorization.

16655800855661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176753 (or 176742 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 62.

The spelling of 16655800855661 in words is "sixteen trillion, six hundred fifty-five billion, eight hundred million, eight hundred fifty-five thousand, six hundred sixty-one".