65775171361 has 2 divisors, whose sum is σ = 65775171362. Its totient is φ = 65775171360.

The previous prime is 65775171349. The next prime is 65775171373. The reversal of 65775171361 is 16317157756.

It is a balanced prime because it is at equal distance from previous prime (65775171349) and next prime (65775171373).

It can be written as a sum of positive squares in only one way, i.e., 58474494225 + 7300677136 = 241815^2 + 85444^2 .

It is a cyclic number.

It is not a de Polignac number, because 65775171361 - 2¹⁹ = 65774647073 is a prime.

It is not a weakly prime, because it can be changed into another prime (65775171961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32887585680 + 32887585681.

It is an arithmetic number, because the mean of its divisors is an integer number (32887585681).

Almost surely, 2^65775171361 is an apocalyptic number.

It is an amenable number.

65775171361 is a deficient number, since it is larger than the sum of its proper divisors (1).

65775171361 is an equidigital number, since it uses as much as digits as its factorization.

65775171361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 926100, while the sum is 49.

The spelling of 65775171361 in words is "sixty-five billion, seven hundred seventy-five million, one hundred seventy-one thousand, three hundred sixty-one".