135335144873 has 2 divisors, whose sum is σ = 135335144874. Its totient is φ = 135335144872.

The previous prime is 135335144869. The next prime is 135335144911. The reversal of 135335144873 is 378441533531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135127554409 + 207590464 = 367597^2 + 14408^2 .

It is a cyclic number.

It is not a de Polignac number, because 135335144873 - 2² = 135335144869 is a prime.

It is a super-2 number, since 2×135335144873² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135335141873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67667572436 + 67667572437.

It is an arithmetic number, because the mean of its divisors is an integer number (67667572437).

Almost surely, 2^135335144873 is an apocalyptic number.

It is an amenable number.

135335144873 is a deficient number, since it is larger than the sum of its proper divisors (1).

135335144873 is an equidigital number, since it uses as much as digits as its factorization.

135335144873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 47.

The spelling of 135335144873 in words is "one hundred thirty-five billion, three hundred thirty-five million, one hundred forty-four thousand, eight hundred seventy-three".