285618323448 has 128 divisors (see below), whose sum is σ = 839540505600. Its totient is φ = 89783971200.

The previous prime is 285618323407. The next prime is 285618323449. The reversal of 285618323448 is 844323816582.

285618323448 is a `hidden beast` number, since 2 + 8 + 561 + 8 + 3 + 2 + 34 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 285618323394 and 285618323403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285618323449) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 52143 + ... + 757598.

It is an arithmetic number, because the mean of its divisors is an integer number (6558910200).

Almost surely, 2^285618323448 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 285618323448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419770252800).

285618323448 is an abundant number, since it is smaller than the sum of its proper divisors (553922182152).

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

285618323448 is a wasteful number, since it uses less digits than its factorization.

285618323448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809850 (or 809840 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 54.

The spelling of 285618323448 in words is "two hundred eighty-five billion, six hundred eighteen million, three hundred twenty-three thousand, four hundred forty-eight".