81040683323 has 8 divisors (see below), whose sum is σ = 86166815040. Its totient is φ = 75954444160.

The previous prime is 81040683293. The next prime is 81040683329. The reversal of 81040683323 is 32338604018.

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

It is not a de Polignac number, because 81040683323 - 2³⁰ = 79966941499 is a prime.

It is a super-3 number, since 3×81040683323³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81040683329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9968948 + ... + 9977073.

It is an arithmetic number, because the mean of its divisors is an integer number (10770851880).

Almost surely, 2^81040683323 is an apocalyptic number.

81040683323 is a deficient number, since it is larger than the sum of its proper divisors (5126131717).

81040683323 is a wasteful number, since it uses less digits than its factorization.

81040683323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19946277.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 81040683323 in words is "eighty-one billion, forty million, six hundred eighty-three thousand, three hundred twenty-three".