216512321688575 has 24 divisors (see below), whose sum is σ = 293062136632320. Its totient is φ = 157366724853600.

The previous prime is 216512321688563. The next prime is 216512321688583. The reversal of 216512321688575 is 575886123215612.

It is not a de Polignac number, because 216512321688575 - 2¹⁴ = 216512321672191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241506335 + ... + 242401184.

It is an arithmetic number, because the mean of its divisors is an integer number (12210922359680).

Almost surely, 2^{216512321688575} is an apocalyptic number.

216512321688575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216512321688575 is a deficient number, since it is larger than the sum of its proper divisors (76549814943745).

216512321688575 is a wasteful number, since it uses less digits than its factorization.

216512321688575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483909167 (or 483909162 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 62.

The spelling of 216512321688575 in words is "two hundred sixteen trillion, five hundred twelve billion, three hundred twenty-one million, six hundred eighty-eight thousand, five hundred seventy-five".