215449606843 has 2 divisors, whose sum is σ = 215449606844. Its totient is φ = 215449606842.

The previous prime is 215449606817. The next prime is 215449606849. The reversal of 215449606843 is 348606944512.

215449606843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215449606843 - 2¹⁷ = 215449475771 is a prime.

It is not a weakly prime, because it can be changed into another prime (215449606849) 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, 107724803421 + 107724803422.

It is an arithmetic number, because the mean of its divisors is an integer number (107724803422).

Almost surely, 2^215449606843 is an apocalyptic number.

215449606843 is a deficient number, since it is larger than the sum of its proper divisors (1).

215449606843 is an equidigital number, since it uses as much as digits as its factorization.

215449606843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 215449606843 in words is "two hundred fifteen billion, four hundred forty-nine million, six hundred six thousand, eight hundred forty-three".