135243501057 has 144 divisors (see below), whose sum is σ = 247061662848. Its totient is φ = 69746987520.

The previous prime is 135243501049. The next prime is 135243501061. The reversal of 135243501057 is 750105342531.

135243501057 is a `hidden beast` number, since 13 + 52 + 43 + 501 + 0 + 57 = 666.

It is not a de Polignac number, because 135243501057 - 2³ = 135243501049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135243501007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 40094223 + ... + 40097595.

It is an arithmetic number, because the mean of its divisors is an integer number (1715705992).

Almost surely, 2^135243501057 is an apocalyptic number.

It is an amenable number.

135243501057 is a deficient number, since it is larger than the sum of its proper divisors (111818161791).

135243501057 is a wasteful number, since it uses less digits than its factorization.

135243501057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

Adding to 135243501057 its reverse (750105342531), we get a palindrome (885348843588).

The spelling of 135243501057 in words is "one hundred thirty-five billion, two hundred forty-three million, five hundred one thousand, fifty-seven".