133331404420 has 24 divisors (see below), whose sum is σ = 280272394584. Its totient is φ = 53279905536.

The previous prime is 133331404391. The next prime is 133331404421. The reversal of 133331404420 is 24404133331.

It can be written as a sum of positive squares in 4 ways, for example, as 345736836 + 132985667584 = 18594^2 + 364672^2 .

It is not an unprimeable number, because it can be changed into a prime (133331404421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3270249 + ... + 3310768.

It is an arithmetic number, because the mean of its divisors is an integer number (11678016441).

Almost surely, 2^133331404420 is an apocalyptic number.

133331404420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133331404420 is an abundant number, since it is smaller than the sum of its proper divisors (146940990164).

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

133331404420 is a wasteful number, since it uses less digits than its factorization.

133331404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582039 (or 6582037 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 133331404420 its reverse (24404133331), we get a palindrome (157735537751).

The spelling of 133331404420 in words is "one hundred thirty-three billion, three hundred thirty-one million, four hundred four thousand, four hundred twenty".