133012033400 has 48 divisors (see below), whose sum is σ = 309383323200. Its totient is φ = 53182388480.

The previous prime is 133012033397. The next prime is 133012033409. The reversal of 133012033400 is 4330210331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133012033409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339641 + ... + 617559.

It is an arithmetic number, because the mean of its divisors is an integer number (6445485900).

Almost surely, 2^133012033400 is an apocalyptic number.

133012033400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133012033400 is an abundant number, since it is smaller than the sum of its proper divisors (176371289800).

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

133012033400 is a wasteful number, since it uses less digits than its factorization.

133012033400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280328 (or 280319 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 133012033400 its reverse (4330210331), we get a palindrome (137342243731).

The spelling of 133012033400 in words is "one hundred thirty-three billion, twelve million, thirty-three thousand, four hundred".