133181939008 has 28 divisors (see below), whose sum is σ = 264614608692. Its totient is φ = 66507392000.

The previous prime is 133181938997. The next prime is 133181939027. The reversal of 133181939008 is 800939181331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79361650944 + 53820288064 = 281712^2 + 231992^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

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, 1254493 + ... + 1356508.

It is an arithmetic number, because the mean of its divisors is an integer number (9450521739).

Almost surely, 2^133181939008 is an apocalyptic number.

It is an amenable number.

133181939008 is a deficient number, since it is larger than the sum of its proper divisors (131432669684).

133181939008 is an equidigital number, since it uses as much as digits as its factorization.

133181939008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611810 (or 2611800 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 133181939008 in words is "one hundred thirty-three billion, one hundred eighty-one million, nine hundred thirty-nine thousand, eight".