385421836928 has 64 divisors (see below), whose sum is σ = 787963317120. Its totient is φ = 187675269120.

The previous prime is 385421836907. The next prime is 385421836939. The reversal of 385421836928 is 829638124583.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2889401 + ... + 3019847.

It is an arithmetic number, because the mean of its divisors is an integer number (12311926830).

Almost surely, 2^385421836928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385421836928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393981658560).

385421836928 is an abundant number, since it is smaller than the sum of its proper divisors (402541480192).

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

385421836928 is a wasteful number, since it uses less digits than its factorization.

385421836928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131065 (or 131053 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 59.

The spelling of 385421836928 in words is "three hundred eighty-five billion, four hundred twenty-one million, eight hundred thirty-six thousand, nine hundred twenty-eight".