216298342705 has 8 divisors (see below), whose sum is σ = 259567198632. Its totient is φ = 173032549248.

The previous prime is 216298342699. The next prime is 216298342717. The reversal of 216298342705 is 507243892612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 490711104 + 215807631601 = 22152^2 + 464551^2 .

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 216298342705 - 2¹³ = 216298334513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607254 + ... + 895183.

It is an arithmetic number, because the mean of its divisors is an integer number (32445899829).

It is a 1-persistent number, because it is pandigital, but 2⋅216298342705 = 432596685410 is not.

Almost surely, 2^216298342705 is an apocalyptic number.

It is an amenable number.

216298342705 is a deficient number, since it is larger than the sum of its proper divisors (43268855927).

216298342705 is a wasteful number, since it uses less digits than its factorization.

216298342705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531235.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 216298342705 in words is "two hundred sixteen billion, two hundred ninety-eight million, three hundred forty-two thousand, seven hundred five".