133111521144 has 144 divisors (see below), whose sum is σ = 423217852200. Its totient is φ = 37682838144.

The previous prime is 133111521139. The next prime is 133111521163. The reversal of 133111521144 is 441125111331.

133111521144 is a `hidden beast` number, since 1 + 331 + 115 + 211 + 4 + 4 = 666.

It is a super-2 number, since 2×133111521144² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 211479 + ... + 557625.

Almost surely, 2^133111521144 is an apocalyptic number.

133111521144 is a gapful number since it is divisible by the number (14) 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 133111521144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211608926100).

133111521144 is an abundant number, since it is smaller than the sum of its proper divisors (290106331056).

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

133111521144 is a wasteful number, since it uses less digits than its factorization.

133111521144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346282 (or 346268 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

Adding to 133111521144 its reverse (441125111331), we get a palindrome (574236632475).

The spelling of 133111521144 in words is "one hundred thirty-three billion, one hundred eleven million, five hundred twenty-one thousand, one hundred forty-four".