135845236540 has 48 divisors (see below), whose sum is σ = 309429519840. Its totient is φ = 49797377280.

The previous prime is 135845236537. The next prime is 135845236547. The reversal of 135845236540 is 45632548531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135845236547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1843291 + ... + 1915570.

It is an arithmetic number, because the mean of its divisors is an integer number (6446448330).

Almost surely, 2^135845236540 is an apocalyptic number.

135845236540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135845236540 is an abundant number, since it is smaller than the sum of its proper divisors (173584283300).

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

135845236540 is a wasteful number, since it uses less digits than its factorization.

135845236540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759022 (or 3759020 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 135845236540 in words is "one hundred thirty-five billion, eight hundred forty-five million, two hundred thirty-six thousand, five hundred forty".