133544388252 has 96 divisors (see below), whose sum is σ = 351659556864. Its totient is φ = 39077438400.

The previous prime is 133544388251. The next prime is 133544388337. The reversal of 133544388252 is 252883445331.

It is a super-3 number, since 3×133544388252³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133544388251) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1859353 + ... + 1929839.

It is an arithmetic number, because the mean of its divisors is an integer number (3663120384).

Almost surely, 2^133544388252 is an apocalyptic number.

133544388252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133544388252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175829778432).

133544388252 is an abundant number, since it is smaller than the sum of its proper divisors (218115168612).

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

133544388252 is a wasteful number, since it uses less digits than its factorization.

133544388252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70999 (or 70997 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 48.

The spelling of 133544388252 in words is "one hundred thirty-three billion, five hundred forty-four million, three hundred eighty-eight thousand, two hundred fifty-two".