505363644068 has 6 divisors (see below), whose sum is σ = 884386377126. Its totient is φ = 252681822032.

The previous prime is 505363644067. The next prime is 505363644091. The reversal of 505363644068 is 860446363505.

It can be written as a sum of positive squares in only one way, i.e., 452926308004 + 52437336064 = 672998^2 + 228992^2 .

It is not an unprimeable number, because it can be changed into a prime (505363644067) 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 as a sum of consecutive naturals, namely, 63170455505 + ... + 63170455512.

It is an arithmetic number, because the mean of its divisors is an integer number (147397729521).

Almost surely, 2^505363644068 is an apocalyptic number.

It is an amenable number.

505363644068 is a deficient number, since it is larger than the sum of its proper divisors (379022733058).

505363644068 is a wasteful number, since it uses less digits than its factorization.

505363644068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126340911021 (or 126340911019 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 505363644068 in words is "five hundred five billion, three hundred sixty-three million, six hundred forty-four thousand, sixty-eight".