133540068689 has 4 divisors (see below), whose sum is σ = 139346158656. Its totient is φ = 127733978724.

The previous prime is 133540068671. The next prime is 133540068691. The reversal of 133540068689 is 986860045331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986860045331 = 339707 ⋅2905033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133540068689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133540068689.

It is not an unprimeable number, because it can be changed into a prime (133540068589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903044949 + ... + 2903044994.

It is an arithmetic number, because the mean of its divisors is an integer number (34836539664).

Almost surely, 2^133540068689 is an apocalyptic number.

It is an amenable number.

133540068689 is a deficient number, since it is larger than the sum of its proper divisors (5806089967).

133540068689 is an equidigital number, since it uses as much as digits as its factorization.

133540068689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806089966.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 133540068689 in words is "one hundred thirty-three billion, five hundred forty million, sixty-eight thousand, six hundred eighty-nine".