81148084111 has 2 divisors, whose sum is σ = 81148084112. Its totient is φ = 81148084110.

The previous prime is 81148084103. The next prime is 81148084117. The reversal of 81148084111 is 11148084118.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81148084111 - 2³ = 81148084103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81148084117) 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 as a sum of consecutive naturals, namely, 40574042055 + 40574042056.

It is an arithmetic number, because the mean of its divisors is an integer number (40574042056).

Almost surely, 2^81148084111 is an apocalyptic number.

81148084111 is a deficient number, since it is larger than the sum of its proper divisors (1).

81148084111 is an equidigital number, since it uses as much as digits as its factorization.

81148084111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 37.

The spelling of 81148084111 in words is "eighty-one billion, one hundred forty-eight million, eighty-four thousand, one hundred eleven".