388568681109 has 48 divisors (see below), whose sum is σ = 683577004032. Its totient is φ = 207866492064.

The previous prime is 388568681099. The next prime is 388568681113. The reversal of 388568681109 is 901186865883.

388568681109 is a `hidden beast` number, since 3 + 8 + 8 + 568 + 68 + 1 + 1 + 0 + 9 = 666.

It is not a de Polignac number, because 388568681109 - 2⁵ = 388568681077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388568681129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2784699 + ... + 2920904.

It is an arithmetic number, because the mean of its divisors is an integer number (14241187584).

Almost surely, 2^388568681109 is an apocalyptic number.

It is an amenable number.

388568681109 is a deficient number, since it is larger than the sum of its proper divisors (295008322923).

388568681109 is a wasteful number, since it uses less digits than its factorization.

388568681109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705686 (or 5705683 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

The spelling of 388568681109 in words is "three hundred eighty-eight billion, five hundred sixty-eight million, six hundred eighty-one thousand, one hundred nine".