82945843693 has 2 divisors, whose sum is σ = 82945843694. Its totient is φ = 82945843692.

The previous prime is 82945843627. The next prime is 82945843697. The reversal of 82945843693 is 39634854928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72303445449 + 10642398244 = 268893^2 + 103162^2 .

It is a cyclic number.

It is not a de Polignac number, because 82945843693 - 2¹³ = 82945835501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82945843697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41472921846 + 41472921847.

It is an arithmetic number, because the mean of its divisors is an integer number (41472921847).

Almost surely, 2^82945843693 is an apocalyptic number.

It is an amenable number.

82945843693 is a deficient number, since it is larger than the sum of its proper divisors (1).

82945843693 is an equidigital number, since it uses as much as digits as its factorization.

82945843693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44789760, while the sum is 61.

The spelling of 82945843693 in words is "eighty-two billion, nine hundred forty-five million, eight hundred forty-three thousand, six hundred ninety-three".