881988397056 has 384 divisors, whose sum is σ = 2836082995200. Its totient is φ = 269216317440.

The previous prime is 881988396907. The next prime is 881988397057. The reversal of 881988397056 is 650793889188.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (881988397057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91288866 + ... + 91298526.

It is an arithmetic number, because the mean of its divisors is an integer number (7385632800).

Almost surely, 2^881988397056 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 881988397056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418041497600).

881988397056 is an abundant number, since it is smaller than the sum of its proper divisors (1954094598144).

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

881988397056 is a wasteful number, since it uses less digits than its factorization.

881988397056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832 (or 9806 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 72.

The spelling of 881988397056 in words is "eight hundred eighty-one billion, nine hundred eighty-eight million, three hundred ninety-seven thousand, fifty-six".