68355976133 has 2 divisors, whose sum is σ = 68355976134. Its totient is φ = 68355976132.

The previous prime is 68355976111. The next prime is 68355976267. The reversal of 68355976133 is 33167955386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52147376164 + 16208599969 = 228358^2 + 127313^2 .

It is a cyclic number.

It is not a de Polignac number, because 68355976133 - 2¹⁰ = 68355975109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68355916133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34177988066 + 34177988067.

It is an arithmetic number, because the mean of its divisors is an integer number (34177988067).

Almost surely, 2^68355976133 is an apocalyptic number.

It is an amenable number.

68355976133 is a deficient number, since it is larger than the sum of its proper divisors (1).

68355976133 is an equidigital number, since it uses as much as digits as its factorization.

68355976133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 56.

The spelling of 68355976133 in words is "sixty-eight billion, three hundred fifty-five million, nine hundred seventy-six thousand, one hundred thirty-three".