65647642764071 has 2 divisors, whose sum is σ = 65647642764072. Its totient is φ = 65647642764070.

The previous prime is 65647642764023. The next prime is 65647642764083. The reversal of 65647642764071 is 17046724674656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65647642764071 - 2⁴² = 61249596252967 is a prime.

It is a super-2 number, since 2×65647642764071² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65647642763989 and 65647642764007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65647642764091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32823821382035 + 32823821382036.

It is an arithmetic number, because the mean of its divisors is an integer number (32823821382036).

Almost surely, 2^{65647642764071} is an apocalyptic number.

65647642764071 is a deficient number, since it is larger than the sum of its proper divisors (1).

65647642764071 is an equidigital number, since it uses as much as digits as its factorization.

65647642764071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 284497920, while the sum is 65.

The spelling of 65647642764071 in words is "sixty-five trillion, six hundred forty-seven billion, six hundred forty-two million, seven hundred sixty-four thousand, seventy-one".