133804321456 has 20 divisors (see below), whose sum is σ = 279187863472. Its totient is φ = 61755840576.

The previous prime is 133804321403. The next prime is 133804321459. The reversal of 133804321456 is 654123408331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133804321459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321644796 + ... + 321645211.

Almost surely, 2^133804321456 is an apocalyptic number.

133804321456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133804321456 is an abundant number, since it is smaller than the sum of its proper divisors (145383542016).

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

133804321456 is a wasteful number, since it uses less digits than its factorization.

133804321456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643290028 (or 643290022 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 133804321456 its reverse (654123408331), we get a palindrome (787927729787).

The spelling of 133804321456 in words is "one hundred thirty-three billion, eight hundred four million, three hundred twenty-one thousand, four hundred fifty-six".