133323220320 has 48 divisors (see below), whose sum is σ = 419968145520. Its totient is φ = 35552858624.

The previous prime is 133323220253. The next prime is 133323220351. The reversal of 133323220320 is 23022323331.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 138877875 + ... + 138878834.

It is an arithmetic number, because the mean of its divisors is an integer number (8749336365).

Almost surely, 2^133323220320 is an apocalyptic number.

133323220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133323220320 is an abundant number, since it is smaller than the sum of its proper divisors (286644925200).

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

133323220320 is a wasteful number, since it uses less digits than its factorization.

133323220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277756727 (or 277756719 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 133323220320 its reverse (23022323331), we get a palindrome (156345543651).

The spelling of 133323220320 in words is "one hundred thirty-three billion, three hundred twenty-three million, two hundred twenty thousand, three hundred twenty".