133585197328 has 160 divisors (see below), whose sum is σ = 306823790592. Its totient is φ = 55653427200.

The previous prime is 133585197323. The next prime is 133585197329. The reversal of 133585197328 is 823791585331.

It is not an unprimeable number, because it can be changed into a prime (133585197323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49273893 + ... + 49276603.

Almost surely, 2^133585197328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133585197328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153411895296).

133585197328 is an abundant number, since it is smaller than the sum of its proper divisors (173238593264).

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

133585197328 is a wasteful number, since it uses less digits than its factorization.

133585197328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173 (or 3167 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 55.

The spelling of 133585197328 in words is "one hundred thirty-three billion, five hundred eighty-five million, one hundred ninety-seven thousand, three hundred twenty-eight".