8381697730560 has 1920 divisors, whose sum is σ = 37673475840000. Its totient is φ = 1731552215040.

The previous prime is 8381697730519. The next prime is 8381697730583. The reversal of 8381697730560 is 650377961838.

8381697730560 is a `hidden beast` number, since 8 + 3 + 8 + 1 + 69 + 7 + 7 + 3 + 0 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 16796989191 + ... + 16796989689.

It is an arithmetic number, because the mean of its divisors is an integer number (19621602000).

Almost surely, 2^{8381697730560} is an apocalyptic number.

8381697730560 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 8381697730560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18836737920000).

8381697730560 is an abundant number, since it is smaller than the sum of its proper divisors (29291778109440).

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

8381697730560 is a wasteful number, since it uses less digits than its factorization.

8381697730560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 8381697730560 in words is "eight trillion, three hundred eighty-one billion, six hundred ninety-seven million, seven hundred thirty thousand, five hundred sixty".