8389057371840 has 672 divisors, whose sum is σ = 31660545995520. Its totient is φ = 2031251447808.

The previous prime is 8389057371811. The next prime is 8389057371841. The reversal of 8389057371840 is 481737509838.

8389057371840 is a `hidden beast` number, since 8 + 3 + 8 + 9 + 0 + 573 + 7 + 18 + 40 = 666.

It is not an unprimeable number, because it can be changed into a prime (8389057371841) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 135619959 + ... + 135681801.

Almost surely, 2^{8389057371840} is an apocalyptic number.

8389057371840 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 8389057371840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15830272997760).

8389057371840 is an abundant number, since it is smaller than the sum of its proper divisors (23271488623680).

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

8389057371840 is a wasteful number, since it uses less digits than its factorization.

8389057371840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61989 (or 61976 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 8389057371840 in words is "eight trillion, three hundred eighty-nine billion, fifty-seven million, three hundred seventy-one thousand, eight hundred forty".