216258782108 has 6 divisors (see below), whose sum is σ = 378452868696. Its totient is φ = 108129391052.

The previous prime is 216258782099. The next prime is 216258782111. The reversal of 216258782108 is 801287852612.

It is a congruent 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 as a sum of consecutive naturals, namely, 27032347760 + ... + 27032347767.

It is an arithmetic number, because the mean of its divisors is an integer number (63075478116).

Almost surely, 2^216258782108 is an apocalyptic number.

It is an amenable number.

216258782108 is a deficient number, since it is larger than the sum of its proper divisors (162194086588).

216258782108 is a wasteful number, since it uses less digits than its factorization.

216258782108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54064695531 (or 54064695529 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 216258782108 in words is "two hundred sixteen billion, two hundred fifty-eight million, seven hundred eighty-two thousand, one hundred eight".