133521145800 has 192 divisors, whose sum is σ = 473326312320. Its totient is φ = 30501058560.

The previous prime is 133521145787. The next prime is 133521145801. The reversal of 133521145800 is 8541125331.

It is not an unprimeable number, because it can be changed into a prime (133521145801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7874932 + ... + 7891868.

It is an arithmetic number, because the mean of its divisors is an integer number (2465241210).

Almost surely, 2^133521145800 is an apocalyptic number.

133521145800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133521145800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236663156160).

133521145800 is an abundant number, since it is smaller than the sum of its proper divisors (339805166520).

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

133521145800 is a wasteful number, since it uses less digits than its factorization.

133521145800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18840 (or 18831 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 133521145800 in words is "one hundred thirty-three billion, five hundred twenty-one million, one hundred forty-five thousand, eight hundred".