50111111000543 has 2 divisors, whose sum is σ = 50111111000544. Its totient is φ = 50111111000542.

The previous prime is 50111111000521. The next prime is 50111111000663. The reversal of 50111111000543 is 34500011111105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50111111000543 - 2¹² = 50111110996447 is a prime.

It is a super-2 number, since 2×50111111000543² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50111111002543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055555500271 + 25055555500272.

It is an arithmetic number, because the mean of its divisors is an integer number (25055555500272).

Almost surely, 2^{50111111000543} is an apocalyptic number.

50111111000543 is a deficient number, since it is larger than the sum of its proper divisors (1).

50111111000543 is an equidigital number, since it uses as much as digits as its factorization.

50111111000543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 50111111000543 its reverse (34500011111105), we get a palindrome (84611122111648).

The spelling of 50111111000543 in words is "fifty trillion, one hundred eleven billion, one hundred eleven million, five hundred forty-three", and thus it is an aban number.