133545555443 has 4 divisors (see below), whose sum is σ = 133570944768. Its totient is φ = 133520166120.

The previous prime is 133545555343. The next prime is 133545555491. The reversal of 133545555443 is 344555545331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344555545331 = 61987 ⋅5558513.

It is a cyclic number.

It is not a de Polignac number, because 133545555443 - 2²⁰ = 133544506867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133545555343) 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, 12686771 + ... + 12697292.

It is an arithmetic number, because the mean of its divisors is an integer number (33392736192).

Almost surely, 2^133545555443 is an apocalyptic number.

133545555443 is a deficient number, since it is larger than the sum of its proper divisors (25389325).

133545555443 is an equidigital number, since it uses as much as digits as its factorization.

133545555443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25389324.

The product of its digits is 5400000, while the sum is 47.

The spelling of 133545555443 in words is "one hundred thirty-three billion, five hundred forty-five million, five hundred fifty-five thousand, four hundred forty-three".