33243434137 has 2 divisors, whose sum is σ = 33243434138. Its totient is φ = 33243434136.

The previous prime is 33243434131. The next prime is 33243434173. The reversal of 33243434137 is 73143434233.

Together with next prime (33243434173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32180413321 + 1063020816 = 179389^2 + 32604^2 .

It is an emirp because it is prime and its reverse (73143434233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33243434137 - 2¹⁵ = 33243401369 is a prime.

It is a super-2 number, since 2×33243434137² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33243434096 and 33243434105.

It is not a weakly prime, because it can be changed into another prime (33243434131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621717068 + 16621717069.

It is an arithmetic number, because the mean of its divisors is an integer number (16621717069).

Almost surely, 2^33243434137 is an apocalyptic number.

It is an amenable number.

33243434137 is a deficient number, since it is larger than the sum of its proper divisors (1).

33243434137 is an equidigital number, since it uses as much as digits as its factorization.

33243434137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 37.

The spelling of 33243434137 in words is "thirty-three billion, two hundred forty-three million, four hundred thirty-four thousand, one hundred thirty-seven".