135332344021 has 8 divisors (see below), whose sum is σ = 154668282624. Its totient is φ = 115997092080.

The previous prime is 135332344013. The next prime is 135332344033. The reversal of 135332344021 is 120443233531.

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 135332344021 - 2³ = 135332344013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135332344051) 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, 360771 + ... + 633103.

It is an arithmetic number, because the mean of its divisors is an integer number (19333535328).

Almost surely, 2^135332344021 is an apocalyptic number.

It is an amenable number.

135332344021 is a deficient number, since it is larger than the sum of its proper divisors (19335938603).

135332344021 is an equidigital number, since it uses as much as digits as its factorization.

135332344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343331.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 135332344021 its reverse (120443233531), we get a palindrome (255775577552).

The spelling of 135332344021 in words is "one hundred thirty-five billion, three hundred thirty-two million, three hundred forty-four thousand, twenty-one".