105417044780405 has 4 divisors (see below), whose sum is σ = 126500453736492. Its totient is φ = 84333635824320.

The previous prime is 105417044780309. The next prime is 105417044780407. The reversal of 105417044780405 is 504087440714501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59780994121489 + 45636050658916 = 7731817^2 + 6755446^2 .

It is not a de Polignac number, because 105417044780405 - 2¹⁰ = 105417044779381 is a prime.

It is a super-2 number, since 2×105417044780405² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105417044780407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10541704478036 + ... + 10541704478045.

It is an arithmetic number, because the mean of its divisors is an integer number (31625113434123).

Almost surely, 2^{105417044780405} is an apocalyptic number.

It is an amenable number.

105417044780405 is a deficient number, since it is larger than the sum of its proper divisors (21083408956087).

105417044780405 is an equidigital number, since it uses as much as digits as its factorization.

105417044780405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21083408956086.

The product of its (nonzero) digits is 2508800, while the sum is 50.

The spelling of 105417044780405 in words is "one hundred five trillion, four hundred seventeen billion, forty-four million, seven hundred eighty thousand, four hundred five".