68618135133 has 24 divisors (see below), whose sum is σ = 99504891200. Its totient is φ = 45565861824.

The previous prime is 68618135107. The next prime is 68618135189. The reversal of 68618135133 is 33153181686.

68618135133 is a `hidden beast` number, since 6 + 8 + 618 + 13 + 5 + 13 + 3 = 666.

It is not a de Polignac number, because 68618135133 - 2¹⁷ = 68618004061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68618135233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2431641 + ... + 2459697.

Almost surely, 2^68618135133 is an apocalyptic number.

It is an amenable number.

68618135133 is a deficient number, since it is larger than the sum of its proper divisors (30886756067).

68618135133 is a wasteful number, since it uses less digits than its factorization.

68618135133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29121 (or 29118 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 68618135133 in words is "sixty-eight billion, six hundred eighteen million, one hundred thirty-five thousand, one hundred thirty-three".