505005550992 has 120 divisors (see below), whose sum is σ = 1465964922240. Its totient is φ = 168300063360.

The previous prime is 505005550981. The next prime is 505005550999. The reversal of 505005550992 is 299055500505.

It is a happy number.

505005550992 is a `hidden beast` number, since 5 + 0 + 5 + 0 + 0 + 5 + 550 + 9 + 92 = 666.

It is not an unprimeable number, because it can be changed into a prime (505005550999) 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 in 23 ways as a sum of consecutive naturals, for example, 24176809 + ... + 24197687.

It is an arithmetic number, because the mean of its divisors is an integer number (12216374352).

Almost surely, 2^505005550992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505005550992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732982461120).

505005550992 is an abundant number, since it is smaller than the sum of its proper divisors (960959371248).

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

505005550992 is a wasteful number, since it uses less digits than its factorization.

505005550992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27123 (or 27105 counting only the distinct ones).

The product of its (nonzero) digits is 506250, while the sum is 45.

The spelling of 505005550992 in words is "five hundred five billion, five million, five hundred fifty thousand, nine hundred ninety-two".