65070272261 has 2 divisors, whose sum is σ = 65070272262. Its totient is φ = 65070272260.

The previous prime is 65070272203. The next prime is 65070272303. The reversal of 65070272261 is 16227207056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64125939361 + 944332900 = 253231^2 + 30730^2 .

It is a cyclic number.

It is not a de Polignac number, because 65070272261 - 2¹⁰ = 65070271237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65070242261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32535136130 + 32535136131.

It is an arithmetic number, because the mean of its divisors is an integer number (32535136131).

Almost surely, 2^65070272261 is an apocalyptic number.

It is an amenable number.

65070272261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65070272261 is an equidigital number, since it uses as much as digits as its factorization.

65070272261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 65070272261 in words is "sixty-five billion, seventy million, two hundred seventy-two thousand, two hundred sixty-one".