81048067011 has 24 divisors (see below), whose sum is σ = 118234103520. Its totient is φ = 53494753536.

The previous prime is 81048066971. The next prime is 81048067049. The reversal of 81048067011 is 11076084018.

It is not a de Polignac number, because 81048067011 - 2¹⁷ = 81047935939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81048063011) 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 23 ways as a sum of consecutive naturals, for example, 5433115 + ... + 5448011.

It is an arithmetic number, because the mean of its divisors is an integer number (4926420980).

Almost surely, 2^81048067011 is an apocalyptic number.

81048067011 is a deficient number, since it is larger than the sum of its proper divisors (37186036509).

81048067011 is a wasteful number, since it uses less digits than its factorization.

81048067011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20875 (or 20872 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 81048067011 in words is "eighty-one billion, forty-eight million, sixty-seven thousand, eleven".