505544111064 has 48 divisors (see below), whose sum is σ = 1370598063120. Its totient is φ = 168340415040.

The previous prime is 505544111057. The next prime is 505544111117. The reversal of 505544111064 is 460111445505.

505544111064 is a `hidden beast` number, since 5 + 0 + 5 + 544 + 1 + 1 + 106 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3560907 + ... + 3700154.

It is an arithmetic number, because the mean of its divisors is an integer number (28554126315).

Almost surely, 2^505544111064 is an apocalyptic number.

It is an amenable number.

505544111064 is an abundant number, since it is smaller than the sum of its proper divisors (865053952056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505544111064 is a wasteful number, since it uses less digits than its factorization.

505544111064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262040 (or 7262033 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 505544111064 its reverse (460111445505), we get a palindrome (965655556569).

The spelling of 505544111064 in words is "five hundred five billion, five hundred forty-four million, one hundred eleven thousand, sixty-four".