81746007263 has 2 divisors, whose sum is σ = 81746007264. Its totient is φ = 81746007262.

The previous prime is 81746007181. The next prime is 81746007281. The reversal of 81746007263 is 36270064718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81746007263 - 2¹² = 81746003167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81746087263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40873003631 + 40873003632.

It is an arithmetic number, because the mean of its divisors is an integer number (40873003632).

Almost surely, 2^81746007263 is an apocalyptic number.

81746007263 is a deficient number, since it is larger than the sum of its proper divisors (1).

81746007263 is an equidigital number, since it uses as much as digits as its factorization.

81746007263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 81746007263 in words is "eighty-one billion, seven hundred forty-six million, seven thousand, two hundred sixty-three".