243622283287816 has 16 divisors (see below), whose sum is σ = 457054154413740. Its totient is φ = 121741175444160.

The previous prime is 243622283287787. The next prime is 243622283287847. The reversal of 243622283287816 is 618782382226342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 227471127965316 + 16151155322500 = 15082146^2 + 4018850^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8745760171 + ... + 8745788026.

Almost surely, 2^{243622283287816} is an apocalyptic number.

It is an amenable number.

243622283287816 is a deficient number, since it is larger than the sum of its proper divisors (213431871125924).

243622283287816 is a wasteful number, since it uses less digits than its factorization.

243622283287816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17491549944 (or 17491549940 counting only the distinct ones).

The product of its digits is 148635648, while the sum is 64.

The spelling of 243622283287816 in words is "two hundred forty-three trillion, six hundred twenty-two billion, two hundred eighty-three million, two hundred eighty-seven thousand, eight hundred sixteen".