389333666016 has 96 divisors (see below), whose sum is σ = 1137297157920. Its totient is φ = 129578959872.

The previous prime is 389333665991. The next prime is 389333666023. The reversal of 389333666016 is 610666333983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219156 + ... + 909228.

It is an arithmetic number, because the mean of its divisors is an integer number (11846845395).

Almost surely, 2^389333666016 is an apocalyptic number.

389333666016 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 389333666016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568648578960).

389333666016 is an abundant number, since it is smaller than the sum of its proper divisors (747963491904).

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

389333666016 is a wasteful number, since it uses less digits than its factorization.

389333666016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690745 (or 690731 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 54.

Adding to 389333666016 its reverse (610666333983), we get a palindrome (999999999999).

The spelling of 389333666016 in words is "three hundred eighty-nine billion, three hundred thirty-three million, six hundred sixty-six thousand, sixteen".