285459386496 has 128 divisors (see below), whose sum is σ = 774774374400. Its totient is φ = 93081719808.

The previous prime is 285459386441. The next prime is 285459386497. The reversal of 285459386496 is 694683954582.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×285459386496² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 285459386496.

It is not an unprimeable number, because it can be changed into a prime (285459386497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68634465 + ... + 68638623.

It is an arithmetic number, because the mean of its divisors is an integer number (6052924800).

Almost surely, 2^285459386496 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 285459386496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387387187200).

285459386496 is an abundant number, since it is smaller than the sum of its proper divisors (489314987904).

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

285459386496 is a wasteful number, since it uses less digits than its factorization.

285459386496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026 (or 8014 counting only the distinct ones).

The product of its digits is 447897600, while the sum is 69.

The spelling of 285459386496 in words is "two hundred eighty-five billion, four hundred fifty-nine million, three hundred eighty-six thousand, four hundred ninety-six".