505440404044505 has 16 divisors (see below), whose sum is σ = 620656909213440. Its totient is φ = 394934073988608.

The previous prime is 505440404044463. The next prime is 505440404044529.

505440404044505 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 505440404044505 - 2¹⁰ = 505440404043481 is a prime.

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, 37981400 + ... + 49532489.

It is an arithmetic number, because the mean of its divisors is an integer number (38791056825840).

Almost surely, 2^{505440404044505} is an apocalyptic number.

It is an amenable number.

505440404044505 is a deficient number, since it is larger than the sum of its proper divisors (115216505168935).

505440404044505 is a wasteful number, since it uses less digits than its factorization.

505440404044505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87540800.

The product of its (nonzero) digits is 2560000, while the sum is 44.

It can be divided in two parts, 50544040 and 4044505, that added together give a palindrome (54588545).

The spelling of 505440404044505 in words is "five hundred five trillion, four hundred forty billion, four hundred four million, forty-four thousand, five hundred five".