201655055017 has 8 divisors (see below), whose sum is σ = 219088815624. Its totient is φ = 184495842048.

The previous prime is 201655054973. The next prime is 201655055111. The reversal of 201655055017 is 710550556102.

It can be written as a sum of positive squares in 4 ways, for example, as 48727913536 + 152927141481 = 220744^2 + 391059^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201655055017 is a prime.

It is a super-2 number, since 2×201655055017² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201655055617) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 68635378 + ... + 68638315.

It is an arithmetic number, because the mean of its divisors is an integer number (27386101953).

Almost surely, 2^201655055017 is an apocalyptic number.

It is an amenable number.

201655055017 is a deficient number, since it is larger than the sum of its proper divisors (17433760607).

201655055017 is a wasteful number, since it uses less digits than its factorization.

201655055017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137273819.

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 201655055017 in words is "two hundred one billion, six hundred fifty-five million, fifty-five thousand, seventeen".