505365426513 has 8 divisors (see below), whose sum is σ = 748689520800. Its totient is φ = 336910284324.

The previous prime is 505365426473. The next prime is 505365426521. The reversal of 505365426513 is 315624563505.

505365426513 is a `hidden beast` number, since 5 + 0 + 5 + 36 + 542 + 65 + 13 = 666.

It is not a de Polignac number, because 505365426513 - 2¹⁴ = 505365410129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505365426563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9358618983 + ... + 9358619036.

It is an arithmetic number, because the mean of its divisors is an integer number (93586190100).

Almost surely, 2^505365426513 is an apocalyptic number.

It is an amenable number.

505365426513 is a deficient number, since it is larger than the sum of its proper divisors (243324094287).

505365426513 is a wasteful number, since it uses less digits than its factorization.

505365426513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18717238028 (or 18717238022 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 505365426513 in words is "five hundred five billion, three hundred sixty-five million, four hundred twenty-six thousand, five hundred thirteen".