133547423813 has 6 divisors (see below), whose sum is σ = 139606286694. Its totient is φ = 127741013576.

The previous prime is 133547423771. The next prime is 133547423819. The reversal of 133547423813 is 318324745331.

It can be written as a sum of positive squares in only one way, i.e., 104961744484 + 28585679329 = 323978^2 + 169073^2 .

It is not a de Polignac number, because 133547423813 - 2⁶ = 133547423749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133547423819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126225770 + ... + 126226827.

It is an arithmetic number, because the mean of its divisors is an integer number (23267714449).

Almost surely, 2^133547423813 is an apocalyptic number.

It is an amenable number.

133547423813 is a deficient number, since it is larger than the sum of its proper divisors (6058862881).

133547423813 is an equidigital number, since it uses as much as digits as its factorization.

133547423813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252452643 (or 252452620 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The spelling of 133547423813 in words is "one hundred thirty-three billion, five hundred forty-seven million, four hundred twenty-three thousand, eight hundred thirteen".