105503040217 has 2 divisors, whose sum is σ = 105503040218. Its totient is φ = 105503040216.

The previous prime is 105503040211. The next prime is 105503040241. The reversal of 105503040217 is 712040305501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105302846016 + 200194201 = 324504^2 + 14149^2 .

It is a cyclic number.

It is not a de Polignac number, because 105503040217 - 2⁷ = 105503040089 is a prime.

It is a super-2 number, since 2×105503040217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105503040211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52751520108 + 52751520109.

It is an arithmetic number, because the mean of its divisors is an integer number (52751520109).

Almost surely, 2^105503040217 is an apocalyptic number.

It is an amenable number.

105503040217 is a deficient number, since it is larger than the sum of its proper divisors (1).

105503040217 is an equidigital number, since it uses as much as digits as its factorization.

105503040217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 105503040217 its reverse (712040305501), we get a palindrome (817543345718).

The spelling of 105503040217 in words is "one hundred five billion, five hundred three million, forty thousand, two hundred seventeen".