216683121195 has 64 divisors (see below), whose sum is σ = 386988810240. Its totient is φ = 115032887424.

The previous prime is 216683121191. The next prime is 216683121197. The reversal of 216683121195 is 591121386612.

It is a happy number.

216683121195 is a `hidden beast` number, since 216 + 6 + 8 + 312 + 119 + 5 = 666.

It is not a de Polignac number, because 216683121195 - 2² = 216683121191 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 216683121195.

It is not an unprimeable number, because it can be changed into a prime (216683121191) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 48723462 + ... + 48727908.

It is an arithmetic number, because the mean of its divisors is an integer number (6046700160).

Almost surely, 2^216683121195 is an apocalyptic number.

216683121195 is a deficient number, since it is larger than the sum of its proper divisors (170305689045).

216683121195 is a wasteful number, since it uses less digits than its factorization.

216683121195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041 (or 6035 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 216683121195 in words is "two hundred sixteen billion, six hundred eighty-three million, one hundred twenty-one thousand, one hundred ninety-five".