135489444241 has 2 divisors, whose sum is σ = 135489444242. Its totient is φ = 135489444240.

The previous prime is 135489444193. The next prime is 135489444271. The reversal of 135489444241 is 142444984531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116334884241 + 19154560000 = 341079^2 + 138400^2 .

It is a cyclic number.

It is not a de Polignac number, because 135489444241 - 2²⁵ = 135455889809 is a prime.

It is not a weakly prime, because it can be changed into another prime (135489444271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67744722120 + 67744722121.

It is an arithmetic number, because the mean of its divisors is an integer number (67744722121).

Almost surely, 2^135489444241 is an apocalyptic number.

It is an amenable number.

135489444241 is a deficient number, since it is larger than the sum of its proper divisors (1).

135489444241 is an equidigital number, since it uses as much as digits as its factorization.

135489444241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2211840, while the sum is 49.

The spelling of 135489444241 in words is "one hundred thirty-five billion, four hundred eighty-nine million, four hundred forty-four thousand, two hundred forty-one".