216509755435 has 16 divisors (see below), whose sum is σ = 261397221120. Its totient is φ = 172153023840.

The previous prime is 216509755411. The next prime is 216509755459. The reversal of 216509755435 is 534557905612.

216509755435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216509755411) and next prime (216509755459).

It is not a de Polignac number, because 216509755435 - 2¹¹ = 216509753387 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640794 + ... + 918496.

It is an arithmetic number, because the mean of its divisors is an integer number (16337326320).

Almost surely, 2^216509755435 is an apocalyptic number.

216509755435 is a deficient number, since it is larger than the sum of its proper divisors (44887465685).

216509755435 is a wasteful number, since it uses less digits than its factorization.

216509755435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278658.

The product of its (nonzero) digits is 5670000, while the sum is 52.

The spelling of 216509755435 in words is "two hundred sixteen billion, five hundred nine million, seven hundred fifty-five thousand, four hundred thirty-five".