135068881 has 2 divisors, whose sum is σ = 135068882. Its totient is φ = 135068880.

The previous prime is 135068867. The next prime is 135068951. The reversal of 135068881 is 188860531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120560400 + 14508481 = 10980^2 + 3809^2 .

It is a cyclic number.

It is not a de Polignac number, because 135068881 - 2⁵ = 135068849 is a prime.

It is a super-2 number, since 2×135068881² = 36487205229184322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135068831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67534440 + 67534441.

It is an arithmetic number, because the mean of its divisors is an integer number (67534441).

Almost surely, 2^135068881 is an apocalyptic number.

It is an amenable number.

135068881 is a deficient number, since it is larger than the sum of its proper divisors (1).

135068881 is an equidigital number, since it uses as much as digits as its factorization.

135068881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 135068881 is about 11621.9138269048. The cubic root of 135068881 is about 513.0800172078.

The spelling of 135068881 in words is "one hundred thirty-five million, sixty-eight thousand, eight hundred eighty-one".