285949549512 has 480 divisors, whose sum is σ = 936318366720. Its totient is φ = 80838051840.

The previous prime is 285949549477. The next prime is 285949549549. The reversal of 285949549512 is 215945949582.

285949549512 is a `hidden beast` number, since 2 + 8 + 59 + 4 + 95 + 495 + 1 + 2 = 666.

It is a super-2 number, since 2×285949549512² (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 285949549512.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 261618438 + ... + 261619530.

It is an arithmetic number, because the mean of its divisors is an integer number (1950663264).

Almost surely, 2^285949549512 is an apocalyptic number.

285949549512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285949549512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468159183360).

285949549512 is an abundant number, since it is smaller than the sum of its proper divisors (650368817208).

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

285949549512 is a wasteful number, since it uses less digits than its factorization.

285949549512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 1253 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 63.

The spelling of 285949549512 in words is "two hundred eighty-five billion, nine hundred forty-nine million, five hundred forty-nine thousand, five hundred twelve".