4405123432505 has 16 divisors (see below), whose sum is σ = 5340700688400. Its totient is φ = 3487803770880.

The previous prime is 4405123432487. The next prime is 4405123432531. The reversal of 4405123432505 is 5052343215044.

It can be written as a sum of positive squares in 8 ways, for example, as 503107908601 + 3902015523904 = 709301^2 + 1975352^2 .

It is not a de Polignac number, because 4405123432505 - 2¹⁴ = 4405123416121 is a prime.

It is a super-2 number, since 2×4405123432505² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4107140 + ... + 5067429.

It is an arithmetic number, because the mean of its divisors is an integer number (333793793025).

Almost surely, 2^{4405123432505} is an apocalyptic number.

It is an amenable number.

4405123432505 is a deficient number, since it is larger than the sum of its proper divisors (935577255895).

4405123432505 is a wasteful number, since it uses less digits than its factorization.

4405123432505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175564.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 4405123432505 its reverse (5052343215044), we get a palindrome (9457466647549).

The spelling of 4405123432505 in words is "four trillion, four hundred five billion, one hundred twenty-three million, four hundred thirty-two thousand, five hundred five".