81014333333 has 4 divisors (see below), whose sum is σ = 81329564460. Its totient is φ = 80699102208.

The previous prime is 81014333327. The next prime is 81014333359. The reversal of 81014333333 is 33333341018.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79943604049 + 1070729284 = 282743^2 + 32722^2 .

It is a cyclic number.

It is not a de Polignac number, because 81014333333 - 2⁶ = 81014333269 is a prime.

It is a Duffinian number.

81014333333 is a modest number, since divided by 333333 gives 81014 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 81014333333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81014333303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157615178 + ... + 157615691.

It is an arithmetic number, because the mean of its divisors is an integer number (20332391115).

Almost surely, 2^81014333333 is an apocalyptic number.

It is an amenable number.

81014333333 is a deficient number, since it is larger than the sum of its proper divisors (315231127).

81014333333 is a wasteful number, since it uses less digits than its factorization.

81014333333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315231126.

The product of its (nonzero) digits is 23328, while the sum is 32.

It can be divided in two parts, 8101 and 4333333, that added together give a palindrome (4341434).

The spelling of 81014333333 in words is "eighty-one billion, fourteen million, three hundred thirty-three thousand, three hundred thirty-three".