285168384380 has 24 divisors (see below), whose sum is σ = 653294844720. Its totient is φ = 103697594240.

The previous prime is 285168384377. The next prime is 285168384419. The reversal of 285168384380 is 83483861582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 648109745 + ... + 648110184.

It is an arithmetic number, because the mean of its divisors is an integer number (27220618530).

Almost surely, 2^285168384380 is an apocalyptic number.

285168384380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285168384380 is an abundant number, since it is smaller than the sum of its proper divisors (368126460340).

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

285168384380 is a wasteful number, since it uses less digits than its factorization.

285168384380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296219949 (or 1296219947 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 285168384380 in words is "two hundred eighty-five billion, one hundred sixty-eight million, three hundred eighty-four thousand, three hundred eighty".