133323243440 has 40 divisors (see below), whose sum is σ = 310254257040. Its totient is φ = 53281518336.

The previous prime is 133323243433. The next prime is 133323243479. The reversal of 133323243440 is 44342323331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 133323243397 and 133323243406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656630 + ... + 835349.

It is an arithmetic number, because the mean of its divisors is an integer number (7756356426).

Almost surely, 2^133323243440 is an apocalyptic number.

133323243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133323243440 is an abundant number, since it is smaller than the sum of its proper divisors (176931013600).

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

133323243440 is a wasteful number, since it uses less digits than its factorization.

133323243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493109 (or 1493103 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 133323243440 its reverse (44342323331), we get a palindrome (177665566771).

The spelling of 133323243440 in words is "one hundred thirty-three billion, three hundred twenty-three million, two hundred forty-three thousand, four hundred forty".