135444321193 has 8 divisors (see below), whose sum is σ = 135624492288. Its totient is φ = 135264205584.

The previous prime is 135444321191. The next prime is 135444321223. The reversal of 135444321193 is 391123444531.

It is a happy number.

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 135444321193 - 2¹ = 135444321191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135444321191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7389346 + ... + 7407652.

It is an arithmetic number, because the mean of its divisors is an integer number (16953061536).

Almost surely, 2^135444321193 is an apocalyptic number.

It is an amenable number.

135444321193 is a deficient number, since it is larger than the sum of its proper divisors (180171095).

135444321193 is an equidigital number, since it uses as much as digits as its factorization.

135444321193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27743.

The product of its digits is 155520, while the sum is 40.

The spelling of 135444321193 in words is "one hundred thirty-five billion, four hundred forty-four million, three hundred twenty-one thousand, one hundred ninety-three".