550401654989 has 2 divisors, whose sum is σ = 550401654990. Its totient is φ = 550401654988.

The previous prime is 550401654917. The next prime is 550401655019. The reversal of 550401654989 is 989456104055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344970624964 + 205431030025 = 587342^2 + 453245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550401654989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550401654389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275200827494 + 275200827495.

It is an arithmetic number, because the mean of its divisors is an integer number (275200827495).

Almost surely, 2^550401654989 is an apocalyptic number.

It is an amenable number.

550401654989 is a deficient number, since it is larger than the sum of its proper divisors (1).

550401654989 is an equidigital number, since it uses as much as digits as its factorization.

550401654989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 550401654989 in words is "five hundred fifty billion, four hundred one million, six hundred fifty-four thousand, nine hundred eighty-nine".