216365979620 has 48 divisors (see below), whose sum is σ = 519444938880. Its totient is φ = 74158823424.

The previous prime is 216365979601. The next prime is 216365979649. The reversal of 216365979620 is 26979563612.

It is a happy number.

216365979620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192851 + ... + 685509.

It is an arithmetic number, because the mean of its divisors is an integer number (10821769560).

Almost surely, 2^216365979620 is an apocalyptic number.

216365979620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216365979620 is an abundant number, since it is smaller than the sum of its proper divisors (303078959260).

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

216365979620 is a wasteful number, since it uses less digits than its factorization.

216365979620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495812 (or 495810 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 216365979620 in words is "two hundred sixteen billion, three hundred sixty-five million, nine hundred seventy-nine thousand, six hundred twenty".