133538640067408 has 20 divisors (see below), whose sum is σ = 272348542243360. Its totient is φ = 63255145294944.

The previous prime is 133538640067381. The next prime is 133538640067411. The reversal of 133538640067408 is 804760046835331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219635920860 + ... + 219635921467.

It is an arithmetic number, because the mean of its divisors is an integer number (13617427112168).

Almost surely, 2^{133538640067408} is an apocalyptic number.

It is an amenable number.

133538640067408 is an abundant number, since it is smaller than the sum of its proper divisors (138809902175952).

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

133538640067408 is a wasteful number, since it uses less digits than its factorization.

133538640067408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439271842354 (or 439271842348 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 133538640067408 in words is "one hundred thirty-three trillion, five hundred thirty-eight billion, six hundred forty million, sixty-seven thousand, four hundred eight".