201061705555 has 16 divisors (see below), whose sum is σ = 251797460544. Its totient is φ = 153835601920.

The previous prime is 201061705519. The next prime is 201061705561. The reversal of 201061705555 is 555507160102.

201061705555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201061705555 - 2¹³ = 201061697363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790227 + ... + 1013203.

It is an arithmetic number, because the mean of its divisors is an integer number (15737341284).

Almost surely, 2^201061705555 is an apocalyptic number.

201061705555 is a deficient number, since it is larger than the sum of its proper divisors (50735754989).

201061705555 is a wasteful number, since it uses less digits than its factorization.

201061705555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230846.

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

Adding to 201061705555 its reverse (555507160102), we get a palindrome (756568865657).

The spelling of 201061705555 in words is "two hundred one billion, sixty-one million, seven hundred five thousand, five hundred fifty-five".