65345230261 has 2 divisors, whose sum is σ = 65345230262. Its totient is φ = 65345230260.

The previous prime is 65345230259. The next prime is 65345230267. The reversal of 65345230261 is 16203254356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55044198225 + 10301032036 = 234615^2 + 101494^2 .

It is a cyclic number.

It is not a de Polignac number, because 65345230261 - 2¹ = 65345230259 is a prime.

It is a super-2 number, since 2×65345230261² (a number of 22 digits) contains 22 as substring.

Together with 65345230259, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 65345230261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65345230267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32672615130 + 32672615131.

It is an arithmetic number, because the mean of its divisors is an integer number (32672615131).

Almost surely, 2^65345230261 is an apocalyptic number.

It is an amenable number.

65345230261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65345230261 is an equidigital number, since it uses as much as digits as its factorization.

65345230261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 65345230261 in words is "sixty-five billion, three hundred forty-five million, two hundred thirty thousand, two hundred sixty-one".