550721437193 has 2 divisors, whose sum is σ = 550721437194. Its totient is φ = 550721437192.

The previous prime is 550721437187. The next prime is 550721437229. The reversal of 550721437193 is 391734127055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525258214009 + 25463223184 = 724747^2 + 159572^2 .

It is a cyclic number.

It is not a de Polignac number, because 550721437193 - 2⁶ = 550721437129 is a prime.

It is not a weakly prime, because it can be changed into another prime (550721437103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275360718596 + 275360718597.

It is an arithmetic number, because the mean of its divisors is an integer number (275360718597).

Almost surely, 2^550721437193 is an apocalyptic number.

It is an amenable number.

550721437193 is a deficient number, since it is larger than the sum of its proper divisors (1).

550721437193 is an equidigital number, since it uses as much as digits as its factorization.

550721437193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 550721437193 in words is "five hundred fifty billion, seven hundred twenty-one million, four hundred thirty-seven thousand, one hundred ninety-three".