133666111568 has 40 divisors (see below), whose sum is σ = 284856488256. Its totient is φ = 60757313760.

The previous prime is 133666111517. The next prime is 133666111573. The reversal of 133666111568 is 865111666331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3116996 + ... + 3159587.

Almost surely, 2^133666111568 is an apocalyptic number.

It is an amenable number.

133666111568 is an abundant number, since it is smaller than the sum of its proper divisors (151190376688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133666111568 is an equidigital number, since it uses as much as digits as its factorization.

133666111568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276624 (or 6276596 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

Adding to 133666111568 its reverse (865111666331), we get a palindrome (998777777899).

The spelling of 133666111568 in words is "one hundred thirty-three billion, six hundred sixty-six million, one hundred eleven thousand, five hundred sixty-eight".