81760759761 has 16 divisors (see below), whose sum is σ = 109273726080. Its totient is φ = 54377581440.

The previous prime is 81760759727. The next prime is 81760759763. The reversal of 81760759761 is 16795706718.

It is a happy number.

It is not a de Polignac number, because 81760759761 - 2¹¹ = 81760757713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81760759763) 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 in 15 ways as a sum of consecutive naturals, for example, 3776355 + ... + 3797943.

It is an arithmetic number, because the mean of its divisors is an integer number (6829607880).

Almost surely, 2^81760759761 is an apocalyptic number.

It is an amenable number.

81760759761 is a deficient number, since it is larger than the sum of its proper divisors (27512966319).

81760759761 is a wasteful number, since it uses less digits than its factorization.

81760759761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24536.

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 81760759761 in words is "eighty-one billion, seven hundred sixty million, seven hundred fifty-nine thousand, seven hundred sixty-one".