216313618242 has 16 divisors (see below), whose sum is σ = 433553638752. Its totient is φ = 71950139040.

The previous prime is 216313618217. The next prime is 216313618249. The reversal of 216313618242 is 242816313612.

It is a self number, because there is not a number n which added to its sum of digits gives 216313618242.

It is not an unprimeable number, because it can be changed into a prime (216313618249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38597059 + ... + 38602662.

It is an arithmetic number, because the mean of its divisors is an integer number (27097102422).

Almost surely, 2^216313618242 is an apocalyptic number.

216313618242 is an abundant number, since it is smaller than the sum of its proper divisors (217240020510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216313618242 is a wasteful number, since it uses less digits than its factorization.

216313618242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77200193.

The product of its digits is 82944, while the sum is 39.

The spelling of 216313618242 in words is "two hundred sixteen billion, three hundred thirteen million, six hundred eighteen thousand, two hundred forty-two".