505871550144 has 84 divisors (see below), whose sum is σ = 1450102846296. Its totient is φ = 168610664448.

The previous prime is 505871550143. The next prime is 505871550229. The reversal of 505871550144 is 441055178505.

505871550144 is a `hidden beast` number, since 5 + 0 + 5 + 87 + 1 + 550 + 14 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 505871550144.

It is not an unprimeable number, because it can be changed into a prime (505871550143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9762127 + ... + 9813809.

Almost surely, 2^505871550144 is an apocalyptic number.

It is an amenable number.

505871550144 is an abundant number, since it is smaller than the sum of its proper divisors (944231296152).

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

505871550144 is a wasteful number, since it uses less digits than its factorization.

505871550144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68694 (or 68681 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 45.

The spelling of 505871550144 in words is "five hundred five billion, eight hundred seventy-one million, five hundred fifty thousand, one hundred forty-four".