501100066550 has 48 divisors (see below), whose sum is σ = 938973235200. Its totient is φ = 198951012000.

The previous prime is 501100066513. The next prime is 501100066559. The reversal of 501100066550 is 55660001105.

It is a super-2 number, since 2×501100066550² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501100066559) 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 23 ways as a sum of consecutive naturals, for example, 54754475 + ... + 54763625.

It is an arithmetic number, because the mean of its divisors is an integer number (19561942400).

Almost surely, 2^501100066550 is an apocalyptic number.

501100066550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

501100066550 is a deficient number, since it is larger than the sum of its proper divisors (437873168650).

501100066550 is a wasteful number, since it uses less digits than its factorization.

501100066550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17181 (or 17176 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 501100066550 its reverse (55660001105), we get a palindrome (556760067655).

The spelling of 501100066550 in words is "five hundred one billion, one hundred million, sixty-six thousand, five hundred fifty".