133481494944 has 192 divisors, whose sum is σ = 445861785600. Its totient is φ = 38058418944.

The previous prime is 133481494943. The next prime is 133481494961. The reversal of 133481494944 is 449494184331.

It is a happy number.

133481494944 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 8 + 149 + 494 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (133481494943) 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 31 ways as a sum of consecutive naturals, for example, 2922717 + ... + 2968035.

It is an arithmetic number, because the mean of its divisors is an integer number (2322196800).

Almost surely, 2^133481494944 is an apocalyptic number.

133481494944 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 133481494944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222930892800).

133481494944 is an abundant number, since it is smaller than the sum of its proper divisors (312380290656).

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

133481494944 is a wasteful number, since it uses less digits than its factorization.

133481494944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45832 (or 45818 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 133481494944 in words is "one hundred thirty-three billion, four hundred eighty-one million, four hundred ninety-four thousand, nine hundred forty-four".