135644044452 has 48 divisors (see below), whose sum is σ = 361739344512. Its totient is φ = 38753095680.

The previous prime is 135644044439. The next prime is 135644044469. The reversal of 135644044452 is 254440446531.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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, 1730788 + ... + 1807460.

It is an arithmetic number, because the mean of its divisors is an integer number (7536236344).

Almost surely, 2^135644044452 is an apocalyptic number.

135644044452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135644044452 is an abundant number, since it is smaller than the sum of its proper divisors (226095300060).

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

135644044452 is a wasteful number, since it uses less digits than its factorization.

135644044452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97748 (or 97746 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

The spelling of 135644044452 in words is "one hundred thirty-five billion, six hundred forty-four million, forty-four thousand, four hundred fifty-two".