68220650775 has 12 divisors (see below), whose sum is σ = 112791476072. Its totient is φ = 36384347040.

The previous prime is 68220650747. The next prime is 68220650777. The reversal of 68220650775 is 57705602286.

It is not a de Polignac number, because 68220650775 - 2⁷ = 68220650647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68220650777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454804264 + ... + 454804413.

Almost surely, 2^68220650775 is an apocalyptic number.

68220650775 is a deficient number, since it is larger than the sum of its proper divisors (44570825297).

68220650775 is a wasteful number, since it uses less digits than its factorization.

68220650775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909608690 (or 909608685 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 68220650775 in words is "sixty-eight billion, two hundred twenty million, six hundred fifty thousand, seven hundred seventy-five".