505240542550 has 24 divisors (see below), whose sum is σ = 942045118200. Its totient is φ = 201602086080.

The previous prime is 505240542523. The next prime is 505240542559. The reversal of 505240542550 is 55245042505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505240542559) 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 11 ways as a sum of consecutive naturals, for example, 12332620 + ... + 12373519.

It is an arithmetic number, because the mean of its divisors is an integer number (39251879925).

Almost surely, 2^505240542550 is an apocalyptic number.

505240542550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505240542550 is a deficient number, since it is larger than the sum of its proper divisors (436804575650).

505240542550 is a wasteful number, since it uses less digits than its factorization.

505240542550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24706560 (or 24706555 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 37.

The spelling of 505240542550 in words is "five hundred five billion, two hundred forty million, five hundred forty-two thousand, five hundred fifty".