388884623885 has 8 divisors (see below), whose sum is σ = 466741752216. Its totient is φ = 311054230080.

The previous prime is 388884623867. The next prime is 388884623891. The reversal of 388884623885 is 588326488883.

It can be written as a sum of positive squares in 4 ways, for example, as 219935674729 + 168948949156 = 468973^2 + 411034^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388884623885 - 2⁶ = 388884623821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 6651614 + ... + 6709823.

It is an arithmetic number, because the mean of its divisors is an integer number (58342719027).

Almost surely, 2^388884623885 is an apocalyptic number.

It is an amenable number.

388884623885 is a deficient number, since it is larger than the sum of its proper divisors (77857128331).

388884623885 is a wasteful number, since it uses less digits than its factorization.

388884623885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367263.

The product of its digits is 566231040, while the sum is 71.

The spelling of 388884623885 in words is "three hundred eighty-eight billion, eight hundred eighty-four million, six hundred twenty-three thousand, eight hundred eighty-five".