285745720608 has 144 divisors (see below), whose sum is σ = 820444584960. Its totient is φ = 94330510848.

The previous prime is 285745720543. The next prime is 285745720643. The reversal of 285745720608 is 806027547582.

285745720608 is a `hidden beast` number, since 2 + 8 + 5 + 7 + 4 + 5 + 7 + 20 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21463458 + ... + 21476766.

It is an arithmetic number, because the mean of its divisors is an integer number (5697531840).

Almost surely, 2^285745720608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285745720608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410222292480).

285745720608 is an abundant number, since it is smaller than the sum of its proper divisors (534698864352).

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

285745720608 is a wasteful number, since it uses less digits than its factorization.

285745720608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14039 (or 14028 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 285745720608 in words is "two hundred eighty-five billion, seven hundred forty-five million, seven hundred twenty thousand, six hundred eight".