551817543443 has 2 divisors, whose sum is σ = 551817543444. Its totient is φ = 551817543442.

The previous prime is 551817543401. The next prime is 551817543469. The reversal of 551817543443 is 344345718155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551817543443 - 2⁸ = 551817543187 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 551817543391 and 551817543400.

It is not a weakly prime, because it can be changed into another prime (551817593443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275908771721 + 275908771722.

It is an arithmetic number, because the mean of its divisors is an integer number (275908771722).

Almost surely, 2^551817543443 is an apocalyptic number.

551817543443 is a deficient number, since it is larger than the sum of its proper divisors (1).

551817543443 is an equidigital number, since it uses as much as digits as its factorization.

551817543443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032000, while the sum is 50.

The spelling of 551817543443 in words is "five hundred fifty-one billion, eight hundred seventeen million, five hundred forty-three thousand, four hundred forty-three".