5218353573668 has 6 divisors (see below), whose sum is σ = 9132118753926. Its totient is φ = 2609176786832.

The previous prime is 5218353573661. The next prime is 5218353573733. The reversal of 5218353573668 is 8663753538125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5208948065344 + 9405508324 = 2282312^2 + 96982^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5218353573668.

It is not an unprimeable number, because it can be changed into a prime (5218353573661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652294196705 + ... + 652294196712.

It is an arithmetic number, because the mean of its divisors is an integer number (1522019792321).

Almost surely, 2^{5218353573668} is an apocalyptic number.

It is an amenable number.

5218353573668 is a deficient number, since it is larger than the sum of its proper divisors (3913765180258).

5218353573668 is a wasteful number, since it uses less digits than its factorization.

5218353573668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304588393421 (or 1304588393419 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 62.

The spelling of 5218353573668 in words is "five trillion, two hundred eighteen billion, three hundred fifty-three million, five hundred seventy-three thousand, six hundred sixty-eight".