135243304452252 has 18 divisors (see below), whose sum is σ = 341865019587728. Its totient is φ = 45081101484072.

The previous prime is 135243304452211. The next prime is 135243304452259. The reversal of 135243304452252 is 252254403342531.

It is a happy number.

135243304452252 is a `hidden beast` number, since 1 + 3 + 5 + 2 + 4 + 3 + 30 + 44 + 522 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 135243304452198 and 135243304452207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135243304452259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1878379228468 + ... + 1878379228539.

Almost surely, 2^{135243304452252} is an apocalyptic number.

135243304452252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135243304452252 is an abundant number, since it is smaller than the sum of its proper divisors (206621715135476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135243304452252 is a wasteful number, since it uses less digits than its factorization.

135243304452252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756758457017 (or 3756758457012 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 45.

Adding to 135243304452252 its reverse (252254403342531), we get a palindrome (387497707794783).

The spelling of 135243304452252 in words is "one hundred thirty-five trillion, two hundred forty-three billion, three hundred four million, four hundred fifty-two thousand, two hundred fifty-two".