216700385535 has 32 divisors (see below), whose sum is σ = 385397948160. Its totient is φ = 115527693600.

The previous prime is 216700385501. The next prime is 216700385579. The reversal of 216700385535 is 535583007612.

216700385535 is a `hidden beast` number, since 2 + 1 + 67 + 0 + 0 + 38 + 553 + 5 = 666.

It is not a de Polignac number, because 216700385535 - 2¹⁹ = 216699861247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 24580 + ... + 658790.

It is an arithmetic number, because the mean of its divisors is an integer number (12043685880).

Almost surely, 2^216700385535 is an apocalyptic number.

216700385535 is a deficient number, since it is larger than the sum of its proper divisors (168697562625).

216700385535 is a wasteful number, since it uses less digits than its factorization.

216700385535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636756 (or 636750 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 216700385535 in words is "two hundred sixteen billion, seven hundred million, three hundred eighty-five thousand, five hundred thirty-five".