65545747660819 has 2 divisors, whose sum is σ = 65545747660820. Its totient is φ = 65545747660818.

The previous prime is 65545747660741. The next prime is 65545747660837. The reversal of 65545747660819 is 91806674754556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65545747660819 - 2³¹ = 65543600177171 is a prime.

It is a super-2 number, since 2×65545747660819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65545747660859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32772873830409 + 32772873830410.

It is an arithmetic number, because the mean of its divisors is an integer number (32772873830410).

Almost surely, 2^{65545747660819} is an apocalyptic number.

65545747660819 is a deficient number, since it is larger than the sum of its proper divisors (1).

65545747660819 is an equidigital number, since it uses as much as digits as its factorization.

65545747660819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096000, while the sum is 73.

The spelling of 65545747660819 in words is "sixty-five trillion, five hundred forty-five billion, seven hundred forty-seven million, six hundred sixty thousand, eight hundred nineteen".