68027816563 has 12 divisors (see below), whose sum is σ = 79145611272. Its totient is φ = 58301295360.

The previous prime is 68027816551. The next prime is 68027816567. The reversal of 68027816563 is 36561872086.

It is not a de Polignac number, because 68027816563 - 2¹³ = 68027808371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68027816563.

It is not an unprimeable number, because it can be changed into a prime (68027816567) 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, 264531 + ... + 453907.

It is an arithmetic number, because the mean of its divisors is an integer number (6595467606).

Almost surely, 2^68027816563 is an apocalyptic number.

68027816563 is a deficient number, since it is larger than the sum of its proper divisors (11117794709).

68027816563 is a wasteful number, since it uses less digits than its factorization.

68027816563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196722 (or 196715 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 68027816563 in words is "sixty-eight billion, twenty-seven million, eight hundred sixteen thousand, five hundred sixty-three".