135664443320331 has 8 divisors (see below), whose sum is σ = 181162931970960. Its totient is φ = 90304458441632.

The previous prime is 135664443320327. The next prime is 135664443320429. The reversal of 135664443320331 is 133023344466531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135664443320331 - 2² = 135664443320327 is a prime.

It is a super-2 number, since 2×135664443320331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135664443320321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34625940696 + ... + 34625944613.

It is an arithmetic number, because the mean of its divisors is an integer number (22645366496370).

Almost surely, 2^{135664443320331} is an apocalyptic number.

135664443320331 is a deficient number, since it is larger than the sum of its proper divisors (45498488650629).

135664443320331 is an equidigital number, since it uses as much as digits as its factorization.

135664443320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69251885965.

The product of its (nonzero) digits is 5598720, while the sum is 48.

Adding to 135664443320331 its reverse (133023344466531), we get a palindrome (268687787786862).

The spelling of 135664443320331 in words is "one hundred thirty-five trillion, six hundred sixty-four billion, four hundred forty-three million, three hundred twenty thousand, three hundred thirty-one".