135523021532 has 48 divisors (see below), whose sum is σ = 256586545152. Its totient is φ = 62447922240.

The previous prime is 135523021511. The next prime is 135523021537. The reversal of 135523021532 is 235120325531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135523021537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542738 + ... + 752070.

It is an arithmetic number, because the mean of its divisors is an integer number (5345553024).

Almost surely, 2^135523021532 is an apocalyptic number.

It is an amenable number.

135523021532 is a deficient number, since it is larger than the sum of its proper divisors (121063523620).

135523021532 is a wasteful number, since it uses less digits than its factorization.

135523021532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209618 (or 209616 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 135523021532 in words is "one hundred thirty-five billion, five hundred twenty-three million, twenty-one thousand, five hundred thirty-two".