133758643787168 has 24 divisors (see below), whose sum is σ = 263357236854180. Its totient is φ = 66874266173440.

The previous prime is 133758643787161. The next prime is 133758643787177. The reversal of 133758643787168 is 861787346857331.

It can be written as a sum of positive squares in 2 ways, for example, as 133259964893584 + 498678893584 = 11543828^2 + 706172^2 .

It is not an unprimeable number, because it can be changed into a prime (133758643787161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157561313 + ... + 158407968.

Almost surely, 2^{133758643787168} is an apocalyptic number.

It is an amenable number.

133758643787168 is a deficient number, since it is larger than the sum of its proper divisors (129598593067012).

133758643787168 is a wasteful number, since it uses less digits than its factorization.

133758643787168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315982520 (or 315982512 counting only the distinct ones).

The product of its digits is 3413975040, while the sum is 77.

The spelling of 133758643787168 in words is "one hundred thirty-three trillion, seven hundred fifty-eight billion, six hundred forty-three million, seven hundred eighty-seven thousand, one hundred sixty-eight".