81085103333 has 8 divisors (see below), whose sum is σ = 87454534776. Its totient is φ = 74734545600.

The previous prime is 81085103293. The next prime is 81085103381. The reversal of 81085103333 is 33330158018.

It can be written as a sum of positive squares in 4 ways, for example, as 8582540164 + 72502563169 = 92642^2 + 269263^2 .

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

It is not a de Polignac number, because 81085103333 - 2¹⁶ = 81085037797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81085103293 and 81085103302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81085102333) 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, 4709498 + ... + 4726683.

It is an arithmetic number, because the mean of its divisors is an integer number (10931816847).

Almost surely, 2^81085103333 is an apocalyptic number.

It is an amenable number.

81085103333 is a deficient number, since it is larger than the sum of its proper divisors (6369431443).

81085103333 is a wasteful number, since it uses less digits than its factorization.

81085103333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436855.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 81085103333 in words is "eighty-one billion, eighty-five million, one hundred three thousand, three hundred thirty-three".