133544801436 has 12 divisors (see below), whose sum is σ = 311604536712. Its totient is φ = 44514933808.

The previous prime is 133544801407. The next prime is 133544801441. The reversal of 133544801436 is 634108445331.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5564366715 + ... + 5564366738.

It is an arithmetic number, because the mean of its divisors is an integer number (25967044726).

Almost surely, 2^133544801436 is an apocalyptic number.

It is an amenable number.

133544801436 is an abundant number, since it is smaller than the sum of its proper divisors (178059735276).

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

133544801436 is a wasteful number, since it uses less digits than its factorization.

133544801436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11128733460 (or 11128733458 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 133544801436 in words is "one hundred thirty-three billion, five hundred forty-four million, eight hundred one thousand, four hundred thirty-six".