135243121445 has 8 divisors (see below), whose sum is σ = 169347908736. Its totient is φ = 103490388496.

The previous prime is 135243121423. The next prime is 135243121451. The reversal of 135243121445 is 544121342531.

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 135243121445 - 2³⁶ = 66523644709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588013457 + ... + 588013686.

It is an arithmetic number, because the mean of its divisors is an integer number (21168488592).

Almost surely, 2^135243121445 is an apocalyptic number.

It is an amenable number.

135243121445 is a deficient number, since it is larger than the sum of its proper divisors (34104787291).

135243121445 is a wasteful number, since it uses less digits than its factorization.

135243121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176027171.

The product of its digits is 57600, while the sum is 35.

Adding to 135243121445 its reverse (544121342531), we get a palindrome (679364463976).

The spelling of 135243121445 in words is "one hundred thirty-five billion, two hundred forty-three million, one hundred twenty-one thousand, four hundred forty-five".