133923021899 has 2 divisors, whose sum is σ = 133923021900. Its totient is φ = 133923021898.

The previous prime is 133923021871. The next prime is 133923021913. The reversal of 133923021899 is 998120329331.

It is a strong prime.

It is an emirp because it is prime and its reverse (998120329331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133923021899 - 2²⁰ = 133921973323 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (133923021499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66961510949 + 66961510950.

It is an arithmetic number, because the mean of its divisors is an integer number (66961510950).

Almost surely, 2^133923021899 is an apocalyptic number.

133923021899 is a deficient number, since it is larger than the sum of its proper divisors (1).

133923021899 is an equidigital number, since it uses as much as digits as its factorization.

133923021899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 133923021899 in words is "one hundred thirty-three billion, nine hundred twenty-three million, twenty-one thousand, eight hundred ninety-nine".