216071742952873 has 2 divisors, whose sum is σ = 216071742952874. Its totient is φ = 216071742952872.

The previous prime is 216071742952859. The next prime is 216071742952883. The reversal of 216071742952873 is 378259247170612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198453937167424 + 17617805785449 = 14087368^2 + 4197357^2 .

It is a cyclic number.

It is not a de Polignac number, because 216071742952873 - 2¹⁷ = 216071742821801 is a prime.

It is not a weakly prime, because it can be changed into another prime (216071742952853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108035871476436 + 108035871476437.

It is an arithmetic number, because the mean of its divisors is an integer number (108035871476437).

It is a 2-persistent number, because it is pandigital, and so is 2⋅216071742952873 = 432143485905746, but 3⋅216071742952873 = 648215228858619 is not.

Almost surely, 2^{216071742952873} is an apocalyptic number.

It is an amenable number.

216071742952873 is a deficient number, since it is larger than the sum of its proper divisors (1).

216071742952873 is an equidigital number, since it uses as much as digits as its factorization.

216071742952873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 216071742952873 in words is "two hundred sixteen trillion, seventy-one billion, seven hundred forty-two million, nine hundred fifty-two thousand, eight hundred seventy-three".