388216678386 has 8 divisors (see below), whose sum is σ = 776433356784. Its totient is φ = 129405559460.

The previous prime is 388216678363. The next prime is 388216678397. The reversal of 388216678386 is 683876612883.

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

388216678386 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32351389860 + ... + 32351389871.

It is an arithmetic number, because the mean of its divisors is an integer number (97054169598).

Almost surely, 2^388216678386 is an apocalyptic number.

388216678386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

388216678386 is a wasteful number, since it uses less digits than its factorization.

388216678386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64702779736.

The product of its digits is 111476736, while the sum is 66.

The spelling of 388216678386 in words is "three hundred eighty-eight billion, two hundred sixteen million, six hundred seventy-eight thousand, three hundred eighty-six".