505412561556523 has 16 divisors (see below), whose sum is σ = 509603668209664. Its totient is φ = 501224801122080.

The previous prime is 505412561556491. The next prime is 505412561556547. The reversal of 505412561556523 is 325655165214505.

It is a cyclic number.

It is not a de Polignac number, because 505412561556523 - 2⁵ = 505412561556491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505412561557523) 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 15 ways as a sum of consecutive naturals, for example, 3248471593 + ... + 3248627173.

It is an arithmetic number, because the mean of its divisors is an integer number (31850229263104).

Almost surely, 2^{505412561556523} is an apocalyptic number.

505412561556523 is a deficient number, since it is larger than the sum of its proper divisors (4191106653141).

505412561556523 is a wasteful number, since it uses less digits than its factorization.

505412561556523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166162.

The product of its (nonzero) digits is 27000000, while the sum is 55.

The spelling of 505412561556523 in words is "five hundred five trillion, four hundred twelve billion, five hundred sixty-one million, five hundred fifty-six thousand, five hundred twenty-three".