135523440040 has 64 divisors (see below), whose sum is σ = 322544332800. Its totient is φ = 51142113792.

The previous prime is 135523440011. The next prime is 135523440077. The reversal of 135523440040 is 40044325531.

It is a junction number, because it is equal to n+sod(n) for n = 135523439984 and 135523440011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 941800 + ... + 1076119.

It is an arithmetic number, because the mean of its divisors is an integer number (5039755200).

Almost surely, 2^135523440040 is an apocalyptic number.

135523440040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135523440040 is an abundant number, since it is smaller than the sum of its proper divisors (187020892760).

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

135523440040 is a wasteful number, since it uses less digits than its factorization.

135523440040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018026 (or 2018022 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 135523440040 its reverse (40044325531), we get a palindrome (175567765571).

The spelling of 135523440040 in words is "one hundred thirty-five billion, five hundred twenty-three million, four hundred forty thousand, forty".