82509767776243 has 2 divisors, whose sum is σ = 82509767776244. Its totient is φ = 82509767776242.

The previous prime is 82509767776199. The next prime is 82509767776297. The reversal of 82509767776243 is 34267776790528.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82509767776243 is a prime.

It is not a weakly prime, because it can be changed into another prime (82509767776043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41254883888121 + 41254883888122.

It is an arithmetic number, because the mean of its divisors is an integer number (41254883888122).

Almost surely, 2^{82509767776243} is an apocalyptic number.

82509767776243 is a deficient number, since it is larger than the sum of its proper divisors (1).

82509767776243 is an equidigital number, since it uses as much as digits as its factorization.

82509767776243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1493614080, while the sum is 73.

The spelling of 82509767776243 in words is "eighty-two trillion, five hundred nine billion, seven hundred sixty-seven million, seven hundred seventy-six thousand, two hundred forty-three".