505500555143 has 2 divisors, whose sum is σ = 505500555144. Its totient is φ = 505500555142.

The previous prime is 505500555029. The next prime is 505500555149. The reversal of 505500555143 is 341555005505.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505500555143 - 2⁸ = 505500554887 is a prime.

It is a super-2 number, since 2×505500555143² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505500555097 and 505500555106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505500555149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252750277571 + 252750277572.

It is an arithmetic number, because the mean of its divisors is an integer number (252750277572).

Almost surely, 2^505500555143 is an apocalyptic number.

505500555143 is a deficient number, since it is larger than the sum of its proper divisors (1).

505500555143 is an equidigital number, since it uses as much as digits as its factorization.

505500555143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 187500, while the sum is 38.

The spelling of 505500555143 in words is "five hundred five billion, five hundred million, five hundred fifty-five thousand, one hundred forty-three".