65464549261 has 2 divisors, whose sum is σ = 65464549262. Its totient is φ = 65464549260.

The previous prime is 65464549177. The next prime is 65464549289. The reversal of 65464549261 is 16294546456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58114744900 + 7349804361 = 241070^2 + 85731^2 .

It is a cyclic number.

It is not a de Polignac number, because 65464549261 - 2⁷ = 65464549133 is a prime.

It is a super-2 number, since 2×65464549261² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65464549199 and 65464549208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65464549061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32732274630 + 32732274631.

It is an arithmetic number, because the mean of its divisors is an integer number (32732274631).

Almost surely, 2^65464549261 is an apocalyptic number.

It is an amenable number.

65464549261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65464549261 is an equidigital number, since it uses as much as digits as its factorization.

65464549261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 52.

The spelling of 65464549261 in words is "sixty-five billion, four hundred sixty-four million, five hundred forty-nine thousand, two hundred sixty-one".