81044737035 has 16 divisors (see below), whose sum is σ = 129718106880. Its totient is φ = 43208350560.

The previous prime is 81044737001. The next prime is 81044737069. The reversal of 81044737035 is 53073744018.

It is an interprime number because it is at equal distance from previous prime (81044737001) and next prime (81044737069).

It is not a de Polignac number, because 81044737035 - 2¹⁰ = 81044736011 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 926065 + ... + 1009794.

It is an arithmetic number, because the mean of its divisors is an integer number (8107381680).

Almost surely, 2^81044737035 is an apocalyptic number.

81044737035 is a deficient number, since it is larger than the sum of its proper divisors (48673369845).

81044737035 is a wasteful number, since it uses less digits than its factorization.

81044737035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938658.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 81044737035 in words is "eighty-one billion, forty-four million, seven hundred thirty-seven thousand, thirty-five".