215133454516237 has 2 divisors, whose sum is σ = 215133454516238. Its totient is φ = 215133454516236.

The previous prime is 215133454516207. The next prime is 215133454516373. The reversal of 215133454516237 is 732615454331512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213551781054921 + 1581673461316 = 14613411^2 + 1257646^2 .

It is a cyclic number.

It is not a de Polignac number, because 215133454516237 - 2¹¹ = 215133454514189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215133454516207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107566727258118 + 107566727258119.

It is an arithmetic number, because the mean of its divisors is an integer number (107566727258119).

Almost surely, 2^{215133454516237} is an apocalyptic number.

It is an amenable number.

215133454516237 is a deficient number, since it is larger than the sum of its proper divisors (1).

215133454516237 is an equidigital number, since it uses as much as digits as its factorization.

215133454516237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072000, while the sum is 52.

The spelling of 215133454516237 in words is "two hundred fifteen trillion, one hundred thirty-three billion, four hundred fifty-four million, five hundred sixteen thousand, two hundred thirty-seven".