65606434663687 has 2 divisors, whose sum is σ = 65606434663688. Its totient is φ = 65606434663686.

The previous prime is 65606434663661. The next prime is 65606434663691. The reversal of 65606434663687 is 78636643460656.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65606434663687 - 2¹⁹ = 65606434139399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65606434663087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32803217331843 + 32803217331844.

It is an arithmetic number, because the mean of its divisors is an integer number (32803217331844).

Almost surely, 2^{65606434663687} is an apocalyptic number.

65606434663687 is a deficient number, since it is larger than the sum of its proper divisors (1).

65606434663687 is an equidigital number, since it uses as much as digits as its factorization.

65606434663687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1881169920, while the sum is 70.

The spelling of 65606434663687 in words is "sixty-five trillion, six hundred six billion, four hundred thirty-four million, six hundred sixty-three thousand, six hundred eighty-seven".