388670730128 has 60 divisors (see below), whose sum is σ = 778899170700. Its totient is φ = 187879403520.

The previous prime is 388670730031. The next prime is 388670730167. The reversal of 388670730128 is 821037076883.

It can be written as a sum of positive squares in 2 ways, for example, as 332753615104 + 55917115024 = 576848^2 + 236468^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 388670730128.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16117376 + ... + 16141472.

It is an arithmetic number, because the mean of its divisors is an integer number (12981652845).

Almost surely, 2^388670730128 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 388670730128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389449585350).

388670730128 is an abundant number, since it is smaller than the sum of its proper divisors (390228440572).

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

388670730128 is a wasteful number, since it uses less digits than its factorization.

388670730128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25216 (or 25179 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 388670730128 in words is "three hundred eighty-eight billion, six hundred seventy million, seven hundred thirty thousand, one hundred twenty-eight".