881664844464 has 60 divisors (see below), whose sum is σ = 2552521077600. Its totient is φ = 283754201472.

The previous prime is 881664844441. The next prime is 881664844469. The reversal of 881664844464 is 464448466188.

881664844464 is a `hidden beast` number, since 8 + 8 + 166 + 4 + 8 + 4 + 4 + 464 = 666.

It is a super-2 number, since 2×881664844464² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (881664844469) 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 11 ways as a sum of consecutive naturals, for example, 105559144 + ... + 105567495.

It is an arithmetic number, because the mean of its divisors is an integer number (42542017960).

Almost surely, 2^881664844464 is an apocalyptic number.

It is an amenable number.

881664844464 is an abundant number, since it is smaller than the sum of its proper divisors (1670856233136).

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

881664844464 is a wasteful number, since it uses less digits than its factorization.

881664844464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211126682 (or 211126673 counting only the distinct ones).

The product of its digits is 113246208, while the sum is 63.

The spelling of 881664844464 in words is "eight hundred eighty-one billion, six hundred sixty-four million, eight hundred forty-four thousand, four hundred sixty-four".