216188812255253 has 2 divisors, whose sum is σ = 216188812255254. Its totient is φ = 216188812255252.

The previous prime is 216188812255211. The next prime is 216188812255363. The reversal of 216188812255253 is 352552218881612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198478703533009 + 17710108722244 = 14088247^2 + 4208338^2 .

It is a cyclic number.

It is not a de Polignac number, because 216188812255253 - 2¹⁰ = 216188812254229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216188812255192 and 216188812255201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216188812275253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108094406127626 + 108094406127627.

It is an arithmetic number, because the mean of its divisors is an integer number (108094406127627).

Almost surely, 2^{216188812255253} is an apocalyptic number.

It is an amenable number.

216188812255253 is a deficient number, since it is larger than the sum of its proper divisors (1).

216188812255253 is an equidigital number, since it uses as much as digits as its factorization.

216188812255253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432000, while the sum is 59.

The spelling of 216188812255253 in words is "two hundred sixteen trillion, one hundred eighty-eight billion, eight hundred twelve million, two hundred fifty-five thousand, two hundred fifty-three".