81061042083 has 16 divisors (see below), whose sum is σ = 123532001280. Its totient is φ = 46316690496.

The previous prime is 81061042061. The next prime is 81061042157. The reversal of 81061042083 is 38024016018.

It is not a de Polignac number, because 81061042083 - 2¹² = 81061037987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81061047083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102366 + ... + 415452.

It is an arithmetic number, because the mean of its divisors is an integer number (7720750080).

Almost surely, 2^81061042083 is an apocalyptic number.

81061042083 is a deficient number, since it is larger than the sum of its proper divisors (42470959197).

81061042083 is a wasteful number, since it uses less digits than its factorization.

81061042083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325426.

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 81061042083 in words is "eighty-one billion, sixty-one million, forty-two thousand, eighty-three".