216800380973975 has 12 divisors (see below), whose sum is σ = 268846720301640. Its totient is φ = 173431112589600.

The previous prime is 216800380973923. The next prime is 216800380973983. The reversal of 216800380973975 is 579379083008612.

It is not a de Polignac number, because 216800380973975 - 2⁸ = 216800380973719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229323581 + ... + 230267030.

It is an arithmetic number, because the mean of its divisors is an integer number (22403893358470).

Almost surely, 2^{216800380973975} is an apocalyptic number.

216800380973975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216800380973975 is a deficient number, since it is larger than the sum of its proper divisors (52046339327665).

216800380973975 is a wasteful number, since it uses less digits than its factorization.

216800380973975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459609490 (or 459609485 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 68.

The spelling of 216800380973975 in words is "two hundred sixteen trillion, eight hundred billion, three hundred eighty million, nine hundred seventy-three thousand, nine hundred seventy-five".