133198842137 has 4 divisors (see below), whose sum is σ = 133253953716. Its totient is φ = 133143730560.

The previous prime is 133198842103. The next prime is 133198842151. The reversal of 133198842137 is 731248891331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 731248891331 = 7 ⋅104464127333.

It can be written as a sum of positive squares in 2 ways, for example, as 131399725081 + 1799117056 = 362491^2 + 42416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133198842137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133198847137) 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, 27552164 + ... + 27556997.

It is an arithmetic number, because the mean of its divisors is an integer number (33313488429).

Almost surely, 2^133198842137 is an apocalyptic number.

It is an amenable number.

133198842137 is a deficient number, since it is larger than the sum of its proper divisors (55111579).

133198842137 is an equidigital number, since it uses as much as digits as its factorization.

133198842137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55111578.

The product of its digits is 870912, while the sum is 50.

The spelling of 133198842137 in words is "one hundred thirty-three billion, one hundred ninety-eight million, eight hundred forty-two thousand, one hundred thirty-seven".