133530706556 has 72 divisors (see below), whose sum is σ = 267066979200. Its totient is φ = 58229720640.

The previous prime is 133530706549. The next prime is 133530706571. The reversal of 133530706556 is 655607035331.

It is a super-2 number, since 2×133530706556² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4854161 + ... + 4881591.

It is an arithmetic number, because the mean of its divisors is an integer number (3709263600).

Almost surely, 2^133530706556 is an apocalyptic number.

It is an amenable number.

133530706556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

133530706556 is a wasteful number, since it uses less digits than its factorization.

133530706556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27859 (or 27844 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 44.

The spelling of 133530706556 in words is "one hundred thirty-three billion, five hundred thirty million, seven hundred six thousand, five hundred fifty-six".