135544443125 has 90 divisors (see below), whose sum is σ = 213359742090. Its totient is φ = 85791888000.

The previous prime is 135544443071. The next prime is 135544443131. The reversal of 135544443125 is 521344445531.

It can be written as a sum of positive squares in 15 ways, for example, as 133998459364 + 1545983761 = 366058^2 + 39319^2 .

It is not a de Polignac number, because 135544443125 - 2²⁴ = 135527665909 is a prime.

It is a congruent number.

It is an unprimeable number.

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 89 ways as a sum of consecutive naturals, for example, 5162531 + ... + 5188719.

It is an arithmetic number, because the mean of its divisors is an integer number (2370663801).

Almost surely, 2^135544443125 is an apocalyptic number.

It is an amenable number.

135544443125 is a deficient number, since it is larger than the sum of its proper divisors (77815298965).

135544443125 is an equidigital number, since it uses as much as digits as its factorization.

135544443125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26249 (or 26214 counting only the distinct ones).

The product of its digits is 576000, while the sum is 41.

Adding to 135544443125 its reverse (521344445531), we get a palindrome (656888888656).

The spelling of 135544443125 in words is "one hundred thirty-five billion, five hundred forty-four million, four hundred forty-three thousand, one hundred twenty-five".