133243883280 has 640 divisors, whose sum is σ = 485351792640. Its totient is φ = 33563013120.

The previous prime is 133243883263. The next prime is 133243883303. The reversal of 133243883280 is 82388342331.

133243883280 is a `hidden beast` number, since 1 + 3 + 3 + 243 + 88 + 328 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 571862044 + ... + 571862276.

It is an arithmetic number, because the mean of its divisors is an integer number (758362176).

Almost surely, 2^133243883280 is an apocalyptic number.

133243883280 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 133243883280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242675896320).

133243883280 is an abundant number, since it is smaller than the sum of its proper divisors (352107909360).

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

133243883280 is a wasteful number, since it uses less digits than its factorization.

133243883280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 133243883280 in words is "one hundred thirty-three billion, two hundred forty-three million, eight hundred eighty-three thousand, two hundred eighty".