99941233913866 has 4 divisors (see below), whose sum is σ = 149911850870802. Its totient is φ = 49970616956932.

The previous prime is 99941233913819. The next prime is 99941233913893. The reversal of 99941233913866 is 66831933214999.

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., 97985350550025 + 1955883363841 = 9898755^2 + 1398529^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24985308478465 + ... + 24985308478468.

Almost surely, 2^{99941233913866} is an apocalyptic number.

99941233913866 is a deficient number, since it is larger than the sum of its proper divisors (49970616956936).

99941233913866 is a wasteful number, since it uses less digits than its factorization.

99941233913866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49970616956935.

The product of its digits is 408146688, while the sum is 73.

The spelling of 99941233913866 in words is "ninety-nine trillion, nine hundred forty-one billion, two hundred thirty-three million, nine hundred thirteen thousand, eight hundred sixty-six".