16655686118645 has 24 divisors (see below), whose sum is σ = 23250159772704. Its totient is φ = 11420952703776.

The previous prime is 16655686118629. The next prime is 16655686118717. The reversal of 16655686118645 is 54681168655661.

It is not a de Polignac number, because 16655686118645 - 2⁴ = 16655686118629 is a prime.

It is a super-3 number, since 3×16655686118645³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52625762 + ... + 52941308.

It is an arithmetic number, because the mean of its divisors is an integer number (968756657196).

Almost surely, 2^{16655686118645} is an apocalyptic number.

It is an amenable number.

16655686118645 is a deficient number, since it is larger than the sum of its proper divisors (6594473654059).

16655686118645 is a wasteful number, since it uses less digits than its factorization.

16655686118645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531009 (or 531002 counting only the distinct ones).

The product of its digits is 248832000, while the sum is 68.

The spelling of 16655686118645 in words is "sixteen trillion, six hundred fifty-five billion, six hundred eighty-six million, one hundred eighteen thousand, six hundred forty-five".