65743636451989 has 2 divisors, whose sum is σ = 65743636451990. Its totient is φ = 65743636451988.

The previous prime is 65743636451947. The next prime is 65743636451993. The reversal of 65743636451989 is 98915463634756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65483021096964 + 260615355025 = 8092158^2 + 510505^2 .

It is a cyclic number.

It is not a de Polignac number, because 65743636451989 - 2¹⁷ = 65743636320917 is a prime.

It is a super-2 number, since 2×65743636451989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65743636451789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32871818225994 + 32871818225995.

It is an arithmetic number, because the mean of its divisors is an integer number (32871818225995).

Almost surely, 2^{65743636451989} is an apocalyptic number.

It is an amenable number.

65743636451989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65743636451989 is an equidigital number, since it uses as much as digits as its factorization.

65743636451989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3527193600, while the sum is 76.

The spelling of 65743636451989 in words is "sixty-five trillion, seven hundred forty-three billion, six hundred thirty-six million, four hundred fifty-one thousand, nine hundred eighty-nine".