83342383821 has 12 divisors (see below), whose sum is σ = 120661470748. Its totient is φ = 55433268864.

The previous prime is 83342383819. The next prime is 83342383853. The reversal of 83342383821 is 12838324338.

83342383821 is a `hidden beast` number, since 8 + 3 + 34 + 238 + 382 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52998485796 + 30343898025 = 230214^2 + 174195^2 .

It is not a de Polignac number, because 83342383821 - 2¹ = 83342383819 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83342383321) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 10689250 + ... + 10697043.

Almost surely, 2^83342383821 is an apocalyptic number.

It is an amenable number.

83342383821 is a deficient number, since it is larger than the sum of its proper divisors (37319086927).

83342383821 is a wasteful number, since it uses less digits than its factorization.

83342383821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386732 (or 21386729 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 83342383821 in words is "eighty-three billion, three hundred forty-two million, three hundred eighty-three thousand, eight hundred twenty-one".