216654309819107 has 2 divisors, whose sum is σ = 216654309819108. Its totient is φ = 216654309819106.

The previous prime is 216654309819091. The next prime is 216654309819169. The reversal of 216654309819107 is 701918903456612.

It is a happy number.

It is an a-pointer prime, because the next prime (216654309819169) can be obtained adding 216654309819107 to its sum of digits (62).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216654309819107 - 2⁴ = 216654309819091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216654309819107.

It is not a weakly prime, because it can be changed into another prime (216654309819187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108327154909553 + 108327154909554.

It is an arithmetic number, because the mean of its divisors is an integer number (108327154909554).

It is a 1-persistent number, because it is pandigital, but 2⋅216654309819107 = 433308619638214 is not.

Almost surely, 2^{216654309819107} is an apocalyptic number.

216654309819107 is a deficient number, since it is larger than the sum of its proper divisors (1).

216654309819107 is an equidigital number, since it uses as much as digits as its factorization.

216654309819107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 216654309819107 in words is "two hundred sixteen trillion, six hundred fifty-four billion, three hundred nine million, eight hundred nineteen thousand, one hundred seven".