8361242961818 has 4 divisors (see below), whose sum is σ = 12541864442730. Its totient is φ = 4180621480908.

The previous prime is 8361242961803. The next prime is 8361242961829. The reversal of 8361242961818 is 8181692421638.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4432907069809 + 3928335892009 = 2105447^2 + 1982003^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090310740453 + ... + 2090310740456.

Almost surely, 2^{8361242961818} is an apocalyptic number.

8361242961818 is a deficient number, since it is larger than the sum of its proper divisors (4180621480912).

8361242961818 is a wasteful number, since it uses less digits than its factorization.

8361242961818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180621480911.

The product of its digits is 7962624, while the sum is 59.

The spelling of 8361242961818 in words is "eight trillion, three hundred sixty-one billion, two hundred forty-two million, nine hundred sixty-one thousand, eight hundred eighteen".