655711681271 has 2 divisors, whose sum is σ = 655711681272. Its totient is φ = 655711681270.

The previous prime is 655711681201. The next prime is 655711681319. The reversal of 655711681271 is 172186117556.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655711681271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655711681201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327855840635 + 327855840636.

It is an arithmetic number, because the mean of its divisors is an integer number (327855840636).

Almost surely, 2^655711681271 is an apocalyptic number.

655711681271 is a deficient number, since it is larger than the sum of its proper divisors (1).

655711681271 is an equidigital number, since it uses as much as digits as its factorization.

655711681271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 50.

The spelling of 655711681271 in words is "six hundred fifty-five billion, seven hundred eleven million, six hundred eighty-one thousand, two hundred seventy-one".