216983343215 has 8 divisors (see below), whose sum is σ = 260421663600. Its totient is φ = 173558906752.

The previous prime is 216983343209. The next prime is 216983343281. The reversal of 216983343215 is 512343389612.

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

It is a cyclic number.

It is not a de Polignac number, because 216983343215 - 2³² = 212688375919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216983343215.

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, 3436565 + ... + 3499134.

It is an arithmetic number, because the mean of its divisors is an integer number (32552707950).

Almost surely, 2^216983343215 is an apocalyptic number.

216983343215 is a deficient number, since it is larger than the sum of its proper divisors (43438320385).

216983343215 is an equidigital number, since it uses as much as digits as its factorization.

216983343215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941961.

The product of its digits is 933120, while the sum is 47.

The spelling of 216983343215 in words is "two hundred sixteen billion, nine hundred eighty-three million, three hundred forty-three thousand, two hundred fifteen".