206153665055 has 8 divisors (see below), whose sum is σ = 266413967232. Its totient is φ = 152236552608.

The previous prime is 206153665027. The next prime is 206153665061. The reversal of 206153665055 is 550566351602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206153665055 - 2⁸ = 206153664799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206153664997 and 206153665015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585797359 + ... + 1585797488.

It is an arithmetic number, because the mean of its divisors is an integer number (33301745904).

Almost surely, 2^206153665055 is an apocalyptic number.

206153665055 is a deficient number, since it is larger than the sum of its proper divisors (60260302177).

206153665055 is a wasteful number, since it uses less digits than its factorization.

206153665055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171594865.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 206153665055 in words is "two hundred six billion, one hundred fifty-three million, six hundred sixty-five thousand, fifty-five".