216676322806677 has 4 divisors (see below), whose sum is σ = 288901763742240. Its totient is φ = 144450881871116.

The previous prime is 216676322806613. The next prime is 216676322806729. The reversal of 216676322806677 is 776608223676612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216676322806677 - 2⁶ = 216676322806613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216676322806277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36112720467777 + ... + 36112720467782.

It is an arithmetic number, because the mean of its divisors is an integer number (72225440935560).

Almost surely, 2^{216676322806677} is an apocalyptic number.

It is an amenable number.

216676322806677 is a deficient number, since it is larger than the sum of its proper divisors (72225440935563).

216676322806677 is an equidigital number, since it uses as much as digits as its factorization.

216676322806677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72225440935562.

The product of its (nonzero) digits is 512096256, while the sum is 69.

The spelling of 216676322806677 in words is "two hundred sixteen trillion, six hundred seventy-six billion, three hundred twenty-two million, eight hundred six thousand, six hundred seventy-seven".