65858943663 has 12 divisors (see below), whose sum is σ = 97341901800. Its totient is φ = 42884893296.

The previous prime is 65858943611. The next prime is 65858943679. The reversal of 65858943663 is 36634985856.

65858943663 is a `hidden beast` number, since 6 + 5 + 8 + 589 + 43 + 6 + 6 + 3 = 666.

65858943663 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 65858943663 - 2⁶ = 65858943599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65858943663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65858943863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85088688 + ... + 85089461.

It is an arithmetic number, because the mean of its divisors is an integer number (8111825150).

Almost surely, 2^65858943663 is an apocalyptic number.

65858943663 is a deficient number, since it is larger than the sum of its proper divisors (31482958137).

65858943663 is a wasteful number, since it uses less digits than its factorization.

65858943663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170178198 (or 170178195 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 63.

The spelling of 65858943663 in words is "sixty-five billion, eight hundred fifty-eight million, nine hundred forty-three thousand, six hundred sixty-three".