55111263124543 has 2 divisors, whose sum is σ = 55111263124544. Its totient is φ = 55111263124542.

The previous prime is 55111263124531. The next prime is 55111263124553. The reversal of 55111263124543 is 34542136211155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55111263124543 - 2²⁹ = 55110726253631 is a prime.

It is a super-2 number, since 2×55111263124543² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55111263124543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55111263124553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27555631562271 + 27555631562272.

It is an arithmetic number, because the mean of its divisors is an integer number (27555631562272).

Almost surely, 2^{55111263124543} is an apocalyptic number.

55111263124543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55111263124543 is an equidigital number, since it uses as much as digits as its factorization.

55111263124543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

Adding to 55111263124543 its reverse (34542136211155), we get a palindrome (89653399335698).

The spelling of 55111263124543 in words is "fifty-five trillion, one hundred eleven billion, two hundred sixty-three million, one hundred twenty-four thousand, five hundred forty-three".