881812641888 has 144 divisors (see below), whose sum is σ = 2574016885440. Its totient is φ = 286222368768.

The previous prime is 881812641881. The next prime is 881812641923. The reversal of 881812641888 is 888146218188.

881812641888 is a `hidden beast` number, since 8 + 8 + 18 + 126 + 418 + 88 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881812641881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2501248 + ... + 2831936.

It is an arithmetic number, because the mean of its divisors is an integer number (17875117260).

Almost surely, 2^881812641888 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 881812641888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287008442720).

881812641888 is an abundant number, since it is smaller than the sum of its proper divisors (1692204243552).

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

881812641888 is a wasteful number, since it uses less digits than its factorization.

881812641888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330949 (or 330938 counting only the distinct ones).

The product of its digits is 12582912, while the sum is 63.

The spelling of 881812641888 in words is "eight hundred eighty-one billion, eight hundred twelve million, six hundred forty-one thousand, eight hundred eighty-eight".