216135603 has 12 divisors (see below), whose sum is σ = 330560568. Its totient is φ = 135614400.

The previous prime is 216135593. The next prime is 216135607. The reversal of 216135603 is 306531612.

216135603 is a `hidden beast` number, since 21 + 6 + 1 + 35 + 603 = 666.

It is not a de Polignac number, because 216135603 - 2¹² = 216131507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216135607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 706173 + ... + 706478.

It is an arithmetic number, because the mean of its divisors is an integer number (27546714).

Almost surely, 2^216135603 is an apocalyptic number.

216135603 is a deficient number, since it is larger than the sum of its proper divisors (114424965).

216135603 is a wasteful number, since it uses less digits than its factorization.

216135603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412674 (or 1412671 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 216135603 is about 14701.5510406215. The cubic root of 216135603 is about 600.1255320677.

The spelling of 216135603 in words is "two hundred sixteen million, one hundred thirty-five thousand, six hundred three".