217372216053775 has 6 divisors (see below), whose sum is σ = 269541547906712. Its totient is φ = 173897772843000.

The previous prime is 217372216053749. The next prime is 217372216053823. The reversal of 217372216053775 is 577350612273712.

217372216053775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 217372216053775 - 2⁹ = 217372216053263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4347444321051 + ... + 4347444321100.

Almost surely, 2^{217372216053775} is an apocalyptic number.

217372216053775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

217372216053775 is a deficient number, since it is larger than the sum of its proper divisors (52169331852937).

217372216053775 is an equidigital number, since it uses as much as digits as its factorization.

217372216053775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694888642161 (or 8694888642156 counting only the distinct ones).

The product of its (nonzero) digits is 25930800, while the sum is 58.

The spelling of 217372216053775 in words is "two hundred seventeen trillion, three hundred seventy-two billion, two hundred sixteen million, fifty-three thousand, seven hundred seventy-five".