135521440133 has 8 divisors (see below), whose sum is σ = 137748969216. Its totient is φ = 133294100400.

The previous prime is 135521440097. The next prime is 135521440151. The reversal of 135521440133 is 331044125531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135521440133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135521440133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135521445133) 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, 2613860 + ... + 2665202.

It is an arithmetic number, because the mean of its divisors is an integer number (17218621152).

Almost surely, 2^135521440133 is an apocalyptic number.

It is an amenable number.

135521440133 is a deficient number, since it is larger than the sum of its proper divisors (2227529083).

135521440133 is an equidigital number, since it uses as much as digits as its factorization.

135521440133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94675.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 135521440133 its reverse (331044125531), we get a palindrome (466565565664).

The spelling of 135521440133 in words is "one hundred thirty-five billion, five hundred twenty-one million, four hundred forty thousand, one hundred thirty-three".