83212443647 has 2 divisors, whose sum is σ = 83212443648. Its totient is φ = 83212443646.

The previous prime is 83212443619. The next prime is 83212443683. The reversal of 83212443647 is 74634421238.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83212443647 - 2¹⁶ = 83212378111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83212443598 and 83212443607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83212403647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41606221823 + 41606221824.

It is an arithmetic number, because the mean of its divisors is an integer number (41606221824).

Almost surely, 2^83212443647 is an apocalyptic number.

83212443647 is a deficient number, since it is larger than the sum of its proper divisors (1).

83212443647 is an equidigital number, since it uses as much as digits as its factorization.

83212443647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 44.

The spelling of 83212443647 in words is "eighty-three billion, two hundred twelve million, four hundred forty-three thousand, six hundred forty-seven".