135144432215320 has 32 divisors (see below), whose sum is σ = 331718151802320. Its totient is φ = 49143429896320.

The previous prime is 135144432215293. The next prime is 135144432215323. The reversal of 135144432215320 is 23512234441531.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135144432215323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153573217987 + ... + 153573218866.

Almost surely, 2^{135144432215320} is an apocalyptic number.

135144432215320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135144432215320 is an abundant number, since it is smaller than the sum of its proper divisors (196573719587000).

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

135144432215320 is a wasteful number, since it uses less digits than its factorization.

135144432215320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307146436875 (or 307146436871 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 135144432215320 its reverse (23512234441531), we get a palindrome (158656666656851).

The spelling of 135144432215320 in words is "one hundred thirty-five trillion, one hundred forty-four billion, four hundred thirty-two million, two hundred fifteen thousand, three hundred twenty".