216835871204 has 6 divisors (see below), whose sum is σ = 379462774614. Its totient is φ = 108417935600.

The previous prime is 216835871201. The next prime is 216835871207. The reversal of 216835871204 is 402178538612.

It is an interprime number because it is at equal distance from previous prime (216835871201) and next prime (216835871207).

It can be written as a sum of positive squares in only one way, i.e., 110089912804 + 106745958400 = 331798^2 + 326720^2 .

It is not an unprimeable number, because it can be changed into a prime (216835871201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27104483897 + ... + 27104483904.

It is an arithmetic number, because the mean of its divisors is an integer number (63243795769).

Almost surely, 2^216835871204 is an apocalyptic number.

It is an amenable number.

216835871204 is a deficient number, since it is larger than the sum of its proper divisors (162626903410).

216835871204 is a wasteful number, since it uses less digits than its factorization.

216835871204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54208967805 (or 54208967803 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 216835871204 in words is "two hundred sixteen billion, eight hundred thirty-five million, eight hundred seventy-one thousand, two hundred four".