8891020333680 has 320 divisors, whose sum is σ = 28734125148288. Its totient is φ = 2272521093120.

The previous prime is 8891020333669. The next prime is 8891020333693. The reversal of 8891020333680 is 863330201988.

It is a super-2 number, since 2×8891020333680² (a number of 27 digits) contains 22 as substring.

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, 130729764 + ... + 130797756.

Almost surely, 2^{8891020333680} is an apocalyptic number.

8891020333680 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 8891020333680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14367062574144).

8891020333680 is an abundant number, since it is smaller than the sum of its proper divisors (19843104814608).

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

8891020333680 is a wasteful number, since it uses less digits than its factorization.

8891020333680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68284 (or 68278 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 8891020333680 in words is "eight trillion, eight hundred ninety-one billion, twenty million, three hundred thirty-three thousand, six hundred eighty".