68563363833 has 18 divisors (see below), whose sum is σ = 104866569054. Its totient is φ = 43018117632.

The previous prime is 68563363823. The next prime is 68563363849. The reversal of 68563363833 is 33836336586.

It can be written as a sum of positive squares in 3 ways, for example, as 57663377424 + 10899986409 = 240132^2 + 104403^2 .

It is not a de Polignac number, because 68563363833 - 2⁵ = 68563363801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68563363833.

It is not an unprimeable number, because it can be changed into a prime (68563363823) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3228273 + ... + 3249441.

It is an arithmetic number, because the mean of its divisors is an integer number (5825920503).

Almost surely, 2^68563363833 is an apocalyptic number.

It is an amenable number.

68563363833 is a deficient number, since it is larger than the sum of its proper divisors (36303205221).

68563363833 is an frugal number, since it uses more digits than its factorization.

68563363833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42361 (or 21189 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 54.

The spelling of 68563363833 in words is "sixty-eight billion, five hundred sixty-three million, three hundred sixty-three thousand, eight hundred thirty-three".