550405431243 has 12 divisors (see below), whose sum is σ = 798501817360. Its totient is φ = 365334608016.

The previous prime is 550405431223. The next prime is 550405431259. The reversal of 550405431243 is 342134504055.

550405431243 is a `hidden beast` number, since 5 + 5 + 0 + 405 + 4 + 3 + 1 + 243 = 666.

It is not a de Polignac number, because 550405431243 - 2¹⁴ = 550405414859 is a prime.

It is a super-2 number, since 2×550405431243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550405431198 and 550405431207.

It is not an unprimeable number, because it can be changed into a prime (550405431223) 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 in 11 ways as a sum of consecutive naturals, for example, 133526671 + ... + 133530792.

Almost surely, 2^550405431243 is an apocalyptic number.

550405431243 is a deficient number, since it is larger than the sum of its proper divisors (248096386117).

550405431243 is a wasteful number, since it uses less digits than its factorization.

550405431243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267057698 (or 267057695 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 550405431243 its reverse (342134504055), we get a palindrome (892539935298).

The spelling of 550405431243 in words is "five hundred fifty billion, four hundred five million, four hundred thirty-one thousand, two hundred forty-three".