505605101109 has 32 divisors (see below), whose sum is σ = 712967270400. Its totient is φ = 318060050880.

The previous prime is 505605101093. The next prime is 505605101119. The reversal of 505605101109 is 901101506505.

It is not a de Polignac number, because 505605101109 - 2⁴ = 505605101093 is a prime.

It is a super-2 number, since 2×505605101109² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505605101109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505605101119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6398362 + ... + 6476900.

It is an arithmetic number, because the mean of its divisors is an integer number (22280227200).

Almost surely, 2^505605101109 is an apocalyptic number.

It is an amenable number.

505605101109 is a deficient number, since it is larger than the sum of its proper divisors (207362169291).

505605101109 is a wasteful number, since it uses less digits than its factorization.

505605101109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79825.

The product of its (nonzero) digits is 6750, while the sum is 33.

The spelling of 505605101109 in words is "five hundred five billion, six hundred five million, one hundred one thousand, one hundred nine".