105555555493 has 2 divisors, whose sum is σ = 105555555494. Its totient is φ = 105555555492.

The previous prime is 105555555451. The next prime is 105555555577. The reversal of 105555555493 is 394555555501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103183573284 + 2371982209 = 321222^2 + 48703^2 .

It is an emirp because it is prime and its reverse (394555555501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105555555493 - 2²¹ = 105553458341 is a prime.

It is a super-2 number, since 2×105555555493² (a number of 23 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 105555555493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105555555403) 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 as a sum of consecutive naturals, namely, 52777777746 + 52777777747.

It is an arithmetic number, because the mean of its divisors is an integer number (52777777747).

Almost surely, 2^105555555493 is an apocalyptic number.

It is an amenable number.

105555555493 is a deficient number, since it is larger than the sum of its proper divisors (1).

105555555493 is an equidigital number, since it uses as much as digits as its factorization.

105555555493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8437500, while the sum is 52.

The spelling of 105555555493 in words is "one hundred five billion, five hundred fifty-five million, five hundred fifty-five thousand, four hundred ninety-three".