505123044505011 has 16 divisors (see below), whose sum is σ = 756738643456800. Its totient is φ = 332965003117824.

The previous prime is 505123044504989. The next prime is 505123044505141. The reversal of 505123044505011 is 110505440321505.

505123044505011 is a `hidden beast` number, since 5 + 0 + 512 + 3 + 0 + 44 + 50 + 50 + 1 + 1 = 666.

It is not a de Polignac number, because 505123044505011 - 2¹⁸ = 505123044242867 is a prime.

It is a super-2 number, since 2×505123044505011² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505123044504011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105102586966 + ... + 105102591771.

It is an arithmetic number, because the mean of its divisors is an integer number (47296165216050).

Almost surely, 2^{505123044505011} is an apocalyptic number.

505123044505011 is a deficient number, since it is larger than the sum of its proper divisors (251615598951789).

505123044505011 is a wasteful number, since it uses less digits than its factorization.

505123044505011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210205178835 (or 210205178829 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 505123044505011 its reverse (110505440321505), we get a palindrome (615628484826516).

The spelling of 505123044505011 in words is "five hundred five trillion, one hundred twenty-three billion, forty-four million, five hundred five thousand, eleven".