388666705460 has 144 divisors (see below), whose sum is σ = 974178757440. Its totient is φ = 128727475200.

The previous prime is 388666705457. The next prime is 388666705489. The reversal of 388666705460 is 64507666883.

It is a self number, because there is not a number n which added to its sum of digits gives 388666705460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3540071 + ... + 3648209.

It is an arithmetic number, because the mean of its divisors is an integer number (6765130260).

Almost surely, 2^388666705460 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 388666705460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487089378720).

388666705460 is an abundant number, since it is smaller than the sum of its proper divisors (585512051980).

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

388666705460 is a wasteful number, since it uses less digits than its factorization.

388666705460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108238 (or 108205 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 388666705460 in words is "three hundred eighty-eight billion, six hundred sixty-six million, seven hundred five thousand, four hundred sixty".