550198997893 has 2 divisors, whose sum is σ = 550198997894. Its totient is φ = 550198997892.

The previous prime is 550198997891. The next prime is 550198997911. The reversal of 550198997893 is 398799891055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550121856804 + 77141089 = 741702^2 + 8783^2 .

It is a cyclic number.

It is not a de Polignac number, because 550198997893 - 2¹ = 550198997891 is a prime.

It is a super-2 number, since 2×550198997893² (a number of 24 digits) contains 22 as substring.

Together with 550198997891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550198997891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275099498946 + 275099498947.

It is an arithmetic number, because the mean of its divisors is an integer number (275099498947).

Almost surely, 2^550198997893 is an apocalyptic number.

It is an amenable number.

550198997893 is a deficient number, since it is larger than the sum of its proper divisors (1).

550198997893 is an equidigital number, since it uses as much as digits as its factorization.

550198997893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220449600, while the sum is 73.

The spelling of 550198997893 in words is "five hundred fifty billion, one hundred ninety-eight million, nine hundred ninety-seven thousand, eight hundred ninety-three".