216388883612 has 12 divisors (see below), whose sum is σ = 413106050616. Its totient is φ = 98358583440.

The previous prime is 216388883573. The next prime is 216388883621.

It is a happy number.

216388883612 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 2458964543 + ... + 2458964630.

It is an arithmetic number, because the mean of its divisors is an integer number (34425504218).

Almost surely, 2^216388883612 is an apocalyptic number.

216388883612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216388883612 is a deficient number, since it is larger than the sum of its proper divisors (196717167004).

216388883612 is a wasteful number, since it uses less digits than its factorization.

216388883612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4917929188 (or 4917929186 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The spelling of 216388883612 in words is "two hundred sixteen billion, three hundred eighty-eight million, eight hundred eighty-three thousand, six hundred twelve".