885809782242 has 486 divisors, whose sum is σ = 2550473093259. Its totient is φ = 221375579040.

The previous prime is 885809782223. The next prime is 885809782259. The reversal of 885809782242 is 242287908588.

885809782242 is a `hidden beast` number, since 8 + 8 + 580 + 9 + 7 + 8 + 2 + 2 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 442904891121 + 442904891121 = 665511^2 + 665511^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=665511.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 885809782242.

It is an unprimeable number.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 13221041493 + ... + 13221041559.

Almost surely, 2^885809782242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 885809782242

885809782242 is an abundant number, since it is smaller than the sum of its proper divisors (1664663311017).

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

885809782242 is a wasteful number, since it uses less digits than its factorization.

885809782242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

It can be divided in two parts, 885809 and 782242, that added together give a triangular number (1668051 = T₁₈₂₆).

The spelling of 885809782242 in words is "eight hundred eighty-five billion, eight hundred nine million, seven hundred eighty-two thousand, two hundred forty-two".