8871382947840 has 768 divisors, whose sum is σ = 33905109288960. Its totient is φ = 1936211312640.

The previous prime is 8871382947803. The next prime is 8871382947851. The reversal of 8871382947840 is 487492831788.

It is a tau number, because it is divible by the number of its divisors (768).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3763843942 + ... + 3763846298.

It is an arithmetic number, because the mean of its divisors is an integer number (44147277720).

Almost surely, 2^{8871382947840} is an apocalyptic number.

8871382947840 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 8871382947840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16952554644480).

8871382947840 is an abundant number, since it is smaller than the sum of its proper divisors (25033726341120).

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

8871382947840 is a wasteful number, since it uses less digits than its factorization.

8871382947840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178 (or 3158 counting only the distinct ones).

The product of its (nonzero) digits is 173408256, while the sum is 69.

The spelling of 8871382947840 in words is "eight trillion, eight hundred seventy-one billion, three hundred eighty-two million, nine hundred forty-seven thousand, eight hundred forty".