38589443856 has 120 divisors (see below), whose sum is σ = 109146701664. Its totient is φ = 12726512640.

The previous prime is 38589443831. The next prime is 38589443857. The reversal of 38589443856 is 65834498583.

It is a happy number.

38589443856 is a `hidden beast` number, since 3 + 8 + 589 + 4 + 43 + 8 + 5 + 6 = 666.

It is a super-2 number, since 2×38589443856² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38589443793 and 38589443802.

It is not an unprimeable number, because it can be changed into a prime (38589443857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19983211 + ... + 19985141.

Almost surely, 2^38589443856 is an apocalyptic number.

38589443856 is a gapful number since it is divisible by the number (36) 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 38589443856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54573350832).

38589443856 is an abundant number, since it is smaller than the sum of its proper divisors (70557257808).

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

38589443856 is a wasteful number, since it uses less digits than its factorization.

38589443856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3340 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 63.

The spelling of 38589443856 in words is "thirty-eight billion, five hundred eighty-nine million, four hundred forty-three thousand, eight hundred fifty-six".