505961603169 has 8 divisors (see below), whose sum is σ = 735944150112. Its totient is φ = 306643395840.

The previous prime is 505961603153. The next prime is 505961603177. The reversal of 505961603169 is 961306169505.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505961603169 - 2⁴ = 505961603153 is a prime.

It is a super-2 number, since 2×505961603169² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505961603129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7666084864 + ... + 7666084929.

It is an arithmetic number, because the mean of its divisors is an integer number (91993018764).

Almost surely, 2^505961603169 is an apocalyptic number.

It is an amenable number.

505961603169 is a deficient number, since it is larger than the sum of its proper divisors (229982546943).

505961603169 is a wasteful number, since it uses less digits than its factorization.

505961603169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332169807.

The product of its (nonzero) digits is 1312200, while the sum is 51.

The spelling of 505961603169 in words is "five hundred five billion, nine hundred sixty-one million, six hundred three thousand, one hundred sixty-nine".