216208217315 has 8 divisors (see below), whose sum is σ = 261874626480. Its totient is φ = 171350063392.

The previous prime is 216208217299. The next prime is 216208217347. The reversal of 216208217315 is 513712802612.

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 216208217315 - 2⁴ = 216208217299 is a prime.

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, 202063220 + ... + 202064289.

It is an arithmetic number, because the mean of its divisors is an integer number (32734328310).

Almost surely, 2^216208217315 is an apocalyptic number.

216208217315 is a deficient number, since it is larger than the sum of its proper divisors (45666409165).

216208217315 is a wasteful number, since it uses less digits than its factorization.

216208217315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404127621.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 216208217315 in words is "two hundred sixteen billion, two hundred eight million, two hundred seventeen thousand, three hundred fifteen".