216851743700719 has 4 divisors (see below), whose sum is σ = 216863286368344. Its totient is φ = 216840201033096.

The previous prime is 216851743700701. The next prime is 216851743700747. The reversal of 216851743700719 is 917007347158612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216851743700719 - 2²⁵ = 216851710146287 is a prime.

It is a super-2 number, since 2×216851743700719² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216851743700519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5771305632 + ... + 5771343205.

It is an arithmetic number, because the mean of its divisors is an integer number (54215821592086).

It is a 1-persistent number, because it is pandigital, but 2⋅216851743700719 = 433703487401438 is not.

Almost surely, 2^{216851743700719} is an apocalyptic number.

216851743700719 is a deficient number, since it is larger than the sum of its proper divisors (11542667625).

216851743700719 is a wasteful number, since it uses less digits than its factorization.

216851743700719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11542667624.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 216851743700719 in words is "two hundred sixteen trillion, eight hundred fifty-one billion, seven hundred forty-three million, seven hundred thousand, seven hundred nineteen".