216142635 has 16 divisors (see below), whose sum is σ = 346231296. Its totient is φ = 115141728.

The previous prime is 216142583. The next prime is 216142649. The reversal of 216142635 is 536241612.

It is not a de Polignac number, because 216142635 - 2⁸ = 216142379 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5662 + ... + 21548.

It is an arithmetic number, because the mean of its divisors is an integer number (21639456).

Almost surely, 2^216142635 is an apocalyptic number.

216142635 is a deficient number, since it is larger than the sum of its proper divisors (130088661).

216142635 is a wasteful number, since it uses less digits than its factorization.

216142635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16802.

The product of its digits is 8640, while the sum is 30.

The square root of 216142635 is about 14701.7901971155. The cubic root of 216142635 is about 600.1320403845.

The spelling of 216142635 in words is "two hundred sixteen million, one hundred forty-two thousand, six hundred thirty-five".