216754172194423 has 2 divisors, whose sum is σ = 216754172194424. Its totient is φ = 216754172194422.

The previous prime is 216754172194409. The next prime is 216754172194489. The reversal of 216754172194423 is 324491271457612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216754172194423 - 2⁴⁵ = 181569800105591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216754172198423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108377086097211 + 108377086097212.

It is an arithmetic number, because the mean of its divisors is an integer number (108377086097212).

Almost surely, 2^{216754172194423} is an apocalyptic number.

216754172194423 is a deficient number, since it is larger than the sum of its proper divisors (1).

216754172194423 is an equidigital number, since it uses as much as digits as its factorization.

216754172194423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 58.

The spelling of 216754172194423 in words is "two hundred sixteen trillion, seven hundred fifty-four billion, one hundred seventy-two million, one hundred ninety-four thousand, four hundred twenty-three".