881338993920 has 1728 divisors, whose sum is σ = 4028400230400. Its totient is φ = 182891520000.

The previous prime is 881338993901. The next prime is 881338993921. The reversal of 881338993920 is 29399833188.

881338993920 is a `hidden beast` number, since 8 + 81 + 3 + 389 + 93 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881338993921) 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 191 ways as a sum of consecutive naturals, for example, 1173553545 + ... + 1173554295.

Almost surely, 2^881338993920 is an apocalyptic number.

881338993920 is a gapful number since it is divisible by the number (80) 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 881338993920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014200115200).

881338993920 is an abundant number, since it is smaller than the sum of its proper divisors (3147061236480).

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

881338993920 is an equidigital number, since it uses as much as digits as its factorization.

881338993920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 881338993920 in words is "eight hundred eighty-one billion, three hundred thirty-eight million, nine hundred ninety-three thousand, nine hundred twenty".