285381041680 has 40 divisors (see below), whose sum is σ = 758298197952. Its totient is φ = 97844928384.

The previous prime is 285381041657. The next prime is 285381041753. The reversal of 285381041680 is 86140183582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 285381041680.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254803942 + ... + 254805061.

Almost surely, 2^285381041680 is an apocalyptic number.

285381041680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285381041680 is an abundant number, since it is smaller than the sum of its proper divisors (472917156272).

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

285381041680 is a wasteful number, since it uses less digits than its factorization.

285381041680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509609023 (or 509609017 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 285381041680 in words is "two hundred eighty-five billion, three hundred eighty-one million, forty-one thousand, six hundred eighty".