135333553913981 has 2 divisors, whose sum is σ = 135333553913982. Its totient is φ = 135333553913980.

The previous prime is 135333553913903. The next prime is 135333553914011. The reversal of 135333553913981 is 189319355333531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109168958076025 + 26164595837956 = 10448395^2 + 5115134^2 .

It is a cyclic number.

It is not a de Polignac number, because 135333553913981 - 2²⁶ = 135333486805117 is a prime.

It is a super-2 number, since 2×135333553913981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135333553213981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67666776956990 + 67666776956991.

It is an arithmetic number, because the mean of its divisors is an integer number (67666776956991).

Almost surely, 2^{135333553913981} is an apocalyptic number.

It is an amenable number.

135333553913981 is a deficient number, since it is larger than the sum of its proper divisors (1).

135333553913981 is an equidigital number, since it uses as much as digits as its factorization.

135333553913981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59049000, while the sum is 62.

The spelling of 135333553913981 in words is "one hundred thirty-five trillion, three hundred thirty-three billion, five hundred fifty-three million, nine hundred thirteen thousand, nine hundred eighty-one".