81074112755 has 8 divisors (see below), whose sum is σ = 97350403392. Its totient is φ = 64818311488.

The previous prime is 81074112709. The next prime is 81074112809. The reversal of 81074112755 is 55721147018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81074112755 - 2¹⁰ = 81074111731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5113634 + ... + 5129463.

It is an arithmetic number, because the mean of its divisors is an integer number (12168800424).

Almost surely, 2^81074112755 is an apocalyptic number.

81074112755 is a deficient number, since it is larger than the sum of its proper divisors (16276290637).

81074112755 is a wasteful number, since it uses less digits than its factorization.

81074112755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10244685.

The product of its (nonzero) digits is 78400, while the sum is 41.

The spelling of 81074112755 in words is "eighty-one billion, seventy-four million, one hundred twelve thousand, seven hundred fifty-five".