655786505271 has 16 divisors (see below), whose sum is σ = 878075990528. Its totient is φ = 435344284800.

The previous prime is 655786505263. The next prime is 655786505287. The reversal of 655786505271 is 172505687556.

It is not a de Polignac number, because 655786505271 - 2³ = 655786505263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655786505261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13141650 + ... + 13191456.

It is an arithmetic number, because the mean of its divisors is an integer number (54879749408).

Almost surely, 2^655786505271 is an apocalyptic number.

655786505271 is a deficient number, since it is larger than the sum of its proper divisors (222289485257).

655786505271 is a wasteful number, since it uses less digits than its factorization.

655786505271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68262.

The product of its (nonzero) digits is 17640000, while the sum is 57.

The spelling of 655786505271 in words is "six hundred fifty-five billion, seven hundred eighty-six million, five hundred five thousand, two hundred seventy-one".