83212443623 has 4 divisors (see below), whose sum is σ = 83990130120. Its totient is φ = 82434757128.

The previous prime is 83212443619. The next prime is 83212443647. The reversal of 83212443623 is 32634421238.

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

It is a cyclic number.

It is not a de Polignac number, because 83212443623 - 2² = 83212443619 is a prime.

It is a super-2 number, since 2×83212443623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83212443683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388843088 + ... + 388843301.

It is an arithmetic number, because the mean of its divisors is an integer number (20997532530).

Almost surely, 2^83212443623 is an apocalyptic number.

83212443623 is a deficient number, since it is larger than the sum of its proper divisors (777686497).

83212443623 is a wasteful number, since it uses less digits than its factorization.

83212443623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777686496.

The product of its digits is 165888, while the sum is 38.

The spelling of 83212443623 in words is "eighty-three billion, two hundred twelve million, four hundred forty-three thousand, six hundred twenty-three".