133494178768 has 20 divisors (see below), whose sum is σ = 260532895140. Its totient is φ = 66259883264.

The previous prime is 133494178723. The next prime is 133494178793. The reversal of 133494178768 is 867871494331.

It can be written as a sum of positive squares in 2 ways, for example, as 69996226624 + 63497952144 = 264568^2 + 251988^2 .

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, 30448123 + ... + 30452506.

It is an arithmetic number, because the mean of its divisors is an integer number (13026644757).

Almost surely, 2^133494178768 is an apocalyptic number.

It is an amenable number.

133494178768 is a deficient number, since it is larger than the sum of its proper divisors (127038716372).

133494178768 is a wasteful number, since it uses less digits than its factorization.

133494178768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60900774 (or 60900768 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 61.

The spelling of 133494178768 in words is "one hundred thirty-three billion, four hundred ninety-four million, one hundred seventy-eight thousand, seven hundred sixty-eight".