505194491505 has 32 divisors (see below), whose sum is σ = 886720296960. Its totient is φ = 243574374080.

The previous prime is 505194491491. The next prime is 505194491507.

505194491505 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 505194491505 - 2⁹ = 505194490993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505194491507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8522937 + ... + 8582006.

It is an arithmetic number, because the mean of its divisors is an integer number (27710009280).

Almost surely, 2^505194491505 is an apocalyptic number.

505194491505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505194491505 is a deficient number, since it is larger than the sum of its proper divisors (381525805455).

505194491505 is a wasteful number, since it uses less digits than its factorization.

505194491505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17105141.

The product of its (nonzero) digits is 810000, while the sum is 48.

It can be divided in two parts, 505194 and 491505, that added together give a palindrome (996699).

The spelling of 505194491505 in words is "five hundred five billion, one hundred ninety-four million, four hundred ninety-one thousand, five hundred five".