4065664356243 has 48 divisors (see below), whose sum is σ = 7023022958016. Its totient is φ = 2217796588800.

The previous prime is 4065664356239. The next prime is 4065664356251. The reversal of 4065664356243 is 3426534665604.

4065664356243 is a `hidden beast` number, since 4 + 0 + 6 + 5 + 6 + 6 + 4 + 3 + 5 + 624 + 3 = 666.

It is not a de Polignac number, because 4065664356243 - 2² = 4065664356239 is a prime.

It is a super-2 number, since 2×4065664356243² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4065664356243.

It is not an unprimeable number, because it can be changed into a prime (4065664356233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16330908 + ... + 16577993.

It is an arithmetic number, because the mean of its divisors is an integer number (146312978292).

Almost surely, 2^{4065664356243} is an apocalyptic number.

4065664356243 is a deficient number, since it is larger than the sum of its proper divisors (2957358601773).

4065664356243 is a wasteful number, since it uses less digits than its factorization.

4065664356243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32909004 (or 32909001 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 54.

The spelling of 4065664356243 in words is "four trillion, sixty-five billion, six hundred sixty-four million, three hundred fifty-six thousand, two hundred forty-three".