135788881 has 2 divisors, whose sum is σ = 135788882. Its totient is φ = 135788880.

The previous prime is 135788879. The next prime is 135788893. The reversal of 135788881 is 188887531.

135788881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112169281 + 23619600 = 10591^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 135788881 - 2¹ = 135788879 is a prime.

It is a super-2 number, since 2×135788881² = 36877240406464322, which contains 22 as substring.

Together with 135788879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135788831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67894440 + 67894441.

It is an arithmetic number, because the mean of its divisors is an integer number (67894441).

Almost surely, 2^135788881 is an apocalyptic number.

It is an amenable number.

135788881 is a deficient number, since it is larger than the sum of its proper divisors (1).

135788881 is an equidigital number, since it uses as much as digits as its factorization.

135788881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 49.

The square root of 135788881 is about 11652.8486216890. The cubic root of 135788881 is about 513.9900791436.

The spelling of 135788881 in words is "one hundred thirty-five million, seven hundred eighty-eight thousand, eight hundred eighty-one".