105550555493 has 2 divisors, whose sum is σ = 105550555494. Its totient is φ = 105550555492.

The previous prime is 105550555471. The next prime is 105550555531. The reversal of 105550555493 is 394555055501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69127978084 + 36422577409 = 262922^2 + 190847^2 .

It is an emirp because it is prime and its reverse (394555055501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105550555493 - 2⁸ = 105550555237 is a prime.

It is a super-2 number, since 2×105550555493² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105550555403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775277746 + 52775277747.

It is an arithmetic number, because the mean of its divisors is an integer number (52775277747).

Almost surely, 2^105550555493 is an apocalyptic number.

It is an amenable number.

105550555493 is a deficient number, since it is larger than the sum of its proper divisors (1).

105550555493 is an equidigital number, since it uses as much as digits as its factorization.

105550555493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1687500, while the sum is 47.

The spelling of 105550555493 in words is "one hundred five billion, five hundred fifty million, five hundred fifty-five thousand, four hundred ninety-three".