216181841428453 has 8 divisors (see below), whose sum is σ = 219145925607768. Its totient is φ = 213217829927424.

The previous prime is 216181841428393. The next prime is 216181841428481. The reversal of 216181841428453 is 354824148181612.

It can be written as a sum of positive squares in 4 ways, for example, as 14115815438404 + 202066025990049 = 3757102^2 + 14214993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216181841428453 - 2¹⁷ = 216181841297381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216181841422453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12166276 + ... + 24091117.

It is an arithmetic number, because the mean of its divisors is an integer number (27393240700971).

Almost surely, 2^{216181841428453} is an apocalyptic number.

It is an amenable number.

216181841428453 is a deficient number, since it is larger than the sum of its proper divisors (2964084179315).

216181841428453 is an equidigital number, since it uses as much as digits as its factorization.

216181841428453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36339143.

The product of its digits is 11796480, while the sum is 58.

The spelling of 216181841428453 in words is "two hundred sixteen trillion, one hundred eighty-one billion, eight hundred forty-one million, four hundred twenty-eight thousand, four hundred fifty-three".