81760759727 has 2 divisors, whose sum is σ = 81760759728. Its totient is φ = 81760759726.

The previous prime is 81760759723. The next prime is 81760759763. The reversal of 81760759727 is 72795706718.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81760759727 - 2² = 81760759723 is a prime.

It is a super-2 number, since 2×81760759727² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81760759721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40880379863 + 40880379864.

It is an arithmetic number, because the mean of its divisors is an integer number (40880379864).

Almost surely, 2^81760759727 is an apocalyptic number.

81760759727 is a deficient number, since it is larger than the sum of its proper divisors (1).

81760759727 is an equidigital number, since it uses as much as digits as its factorization.

81760759727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10372320, while the sum is 59.

The spelling of 81760759727 in words is "eighty-one billion, seven hundred sixty million, seven hundred fifty-nine thousand, seven hundred twenty-seven".