388886868867 has 16 divisors (see below), whose sum is σ = 593958095360. Its totient is φ = 221707850112.

The previous prime is 388886868863. The next prime is 388886868871. The reversal of 388886868867 is 768868688883.

It is an interprime number because it is at equal distance from previous prime (388886868863) and next prime (388886868871).

It is not a de Polignac number, because 388886868867 - 2² = 388886868863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 388886868867.

It is not an unprimeable number, because it can be changed into a prime (388886868863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21374767 + ... + 21392952.

It is an arithmetic number, because the mean of its divisors is an integer number (37122380960).

Almost surely, 2^388886868867 is an apocalyptic number.

388886868867 is a deficient number, since it is larger than the sum of its proper divisors (205071226493).

388886868867 is a wasteful number, since it uses less digits than its factorization.

388886868867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42768162.

The product of its digits is 9512681472, while the sum is 84.

The spelling of 388886868867 in words is "three hundred eighty-eight billion, eight hundred eighty-six million, eight hundred sixty-eight thousand, eight hundred sixty-seven".