68634232771133 has 2 divisors, whose sum is σ = 68634232771134. Its totient is φ = 68634232771132.

The previous prime is 68634232771087. The next prime is 68634232771189. The reversal of 68634232771133 is 33117723243686.

It is an a-pointer prime, because the next prime (68634232771189) can be obtained adding 68634232771133 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68613688422244 + 20544348889 = 8283338^2 + 143333^2 .

It is a cyclic number.

It is not a de Polignac number, because 68634232771133 - 2²⁶ = 68634165662269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68634232771733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34317116385566 + 34317116385567.

It is an arithmetic number, because the mean of its divisors is an integer number (34317116385567).

Almost surely, 2^{68634232771133} is an apocalyptic number.

It is an amenable number.

68634232771133 is a deficient number, since it is larger than the sum of its proper divisors (1).

68634232771133 is an equidigital number, since it uses as much as digits as its factorization.

68634232771133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 56.

The spelling of 68634232771133 in words is "sixty-eight trillion, six hundred thirty-four billion, two hundred thirty-two million, seven hundred seventy-one thousand, one hundred thirty-three".