135440502000 has 80 divisors (see below), whose sum is σ = 436660197792. Its totient is φ = 36117465600.

The previous prime is 135440501993. The next prime is 135440502007. The reversal of 135440502000 is 205044531.

It is an interprime number because it is at equal distance from previous prime (135440501993) and next prime (135440502007).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135440502007) 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 15 ways as a sum of consecutive naturals, for example, 11280709 + ... + 11292708.

Almost surely, 2^135440502000 is an apocalyptic number.

135440502000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135440502000 is an abundant number, since it is smaller than the sum of its proper divisors (301219695792).

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

135440502000 is a wasteful number, since it uses less digits than its factorization.

135440502000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22573443 (or 22573427 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 135440502000 its reverse (205044531), we get a palindrome (135645546531).

The spelling of 135440502000 in words is "one hundred thirty-five billion, four hundred forty million, five hundred two thousand".