81060011 has 4 divisors (see below), whose sum is σ = 81090024. Its totient is φ = 81030000.

The previous prime is 81059999. The next prime is 81060013. The reversal of 81060011 is 11006018.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 81060011 - 2¹⁰ = 81058987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81060013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10505 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (20272506).

Almost surely, 2^81060011 is an apocalyptic number.

81060011 is a deficient number, since it is larger than the sum of its proper divisors (30013).

81060011 is a wasteful number, since it uses less digits than its factorization.

81060011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30012.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 81060011 is about 9003.3333271628. Note that the first 4 decimals coincide. The cubic root of 81060011 is about 432.7816976024.

Adding to 81060011 its reverse (11006018), we get a palindrome (92066029).

The spelling of 81060011 in words is "eighty-one million, sixty thousand, eleven".