216797187615 has 16 divisors (see below), whose sum is σ = 358065033216. Its totient is φ = 111895322400.

The previous prime is 216797187599. The next prime is 216797187661. The reversal of 216797187615 is 516781797612.

It is not a de Polignac number, because 216797187615 - 2⁴ = 216797187599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233114791 + ... + 233115720.

It is an arithmetic number, because the mean of its divisors is an integer number (22379064576).

Almost surely, 2^216797187615 is an apocalyptic number.

216797187615 is a deficient number, since it is larger than the sum of its proper divisors (141267845601).

216797187615 is a wasteful number, since it uses less digits than its factorization.

216797187615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466230550.

The product of its digits is 8890560, while the sum is 60.

The spelling of 216797187615 in words is "two hundred sixteen billion, seven hundred ninety-seven million, one hundred eighty-seven thousand, six hundred fifteen".