505278027550 has 24 divisors (see below), whose sum is σ = 940451851872. Its totient is φ = 201974712000.

The previous prime is 505278027523. The next prime is 505278027563. The reversal of 505278027550 is 55720872505.

It is a self number, because there is not a number n which added to its sum of digits gives 505278027550.

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, 3337686 + ... + 3485785.

It is an arithmetic number, because the mean of its divisors is an integer number (39185493828).

Almost surely, 2^505278027550 is an apocalyptic number.

505278027550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505278027550 is a deficient number, since it is larger than the sum of its proper divisors (435173824322).

505278027550 is a wasteful number, since it uses less digits than its factorization.

505278027550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6824964 (or 6824959 counting only the distinct ones).

The product of its (nonzero) digits is 980000, while the sum is 46.

The spelling of 505278027550 in words is "five hundred five billion, two hundred seventy-eight million, twenty-seven thousand, five hundred fifty".