551366650577 has 2 divisors, whose sum is σ = 551366650578. Its totient is φ = 551366650576.

The previous prime is 551366650559. The next prime is 551366650591. The reversal of 551366650577 is 775056663155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516787016641 + 34579633936 = 718879^2 + 185956^2 .

It is a cyclic number.

It is not a de Polignac number, because 551366650577 - 2¹⁴ = 551366634193 is a prime.

It is a super-2 number, since 2×551366650577² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (551366650547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275683325288 + 275683325289.

It is an arithmetic number, because the mean of its divisors is an integer number (275683325289).

Almost surely, 2^551366650577 is an apocalyptic number.

It is an amenable number.

551366650577 is a deficient number, since it is larger than the sum of its proper divisors (1).

551366650577 is an equidigital number, since it uses as much as digits as its factorization.

551366650577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845000, while the sum is 56.

The spelling of 551366650577 in words is "five hundred fifty-one billion, three hundred sixty-six million, six hundred fifty thousand, five hundred seventy-seven".