550642864649 has 2 divisors, whose sum is σ = 550642864650. Its totient is φ = 550642864648.

The previous prime is 550642864633. The next prime is 550642864663. The reversal of 550642864649 is 946468246055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538513807225 + 12129057424 = 733835^2 + 110132^2 .

It is a cyclic number.

It is not a de Polignac number, because 550642864649 - 2⁴ = 550642864633 is a prime.

It is not a weakly prime, because it can be changed into another prime (550642864249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275321432324 + 275321432325.

It is an arithmetic number, because the mean of its divisors is an integer number (275321432325).

Almost surely, 2^550642864649 is an apocalyptic number.

It is an amenable number.

550642864649 is a deficient number, since it is larger than the sum of its proper divisors (1).

550642864649 is an equidigital number, since it uses as much as digits as its factorization.

550642864649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 59.

The spelling of 550642864649 in words is "five hundred fifty billion, six hundred forty-two million, eight hundred sixty-four thousand, six hundred forty-nine".