550815689117 has 2 divisors, whose sum is σ = 550815689118. Its totient is φ = 550815689116.

The previous prime is 550815689077. The next prime is 550815689141. The reversal of 550815689117 is 711986518055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438341981476 + 112473707641 = 662074^2 + 335371^2 .

It is a cyclic number.

It is not a de Polignac number, because 550815689117 - 2²² = 550811494813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550815659117) 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, 275407844558 + 275407844559.

It is an arithmetic number, because the mean of its divisors is an integer number (275407844559).

Almost surely, 2^550815689117 is an apocalyptic number.

It is an amenable number.

550815689117 is a deficient number, since it is larger than the sum of its proper divisors (1).

550815689117 is an equidigital number, since it uses as much as digits as its factorization.

550815689117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 56.

The spelling of 550815689117 in words is "five hundred fifty billion, eight hundred fifteen million, six hundred eighty-nine thousand, one hundred seventeen".