81648000701 has 2 divisors, whose sum is σ = 81648000702. Its totient is φ = 81648000700.

The previous prime is 81648000697. The next prime is 81648000703. The reversal of 81648000701 is 10700084618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79958872900 + 1689127801 = 282770^2 + 41099^2 .

It is a cyclic number.

It is not a de Polignac number, because 81648000701 - 2² = 81648000697 is a prime.

Together with 81648000703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81648000703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40824000350 + 40824000351.

It is an arithmetic number, because the mean of its divisors is an integer number (40824000351).

Almost surely, 2^81648000701 is an apocalyptic number.

It is an amenable number.

81648000701 is a deficient number, since it is larger than the sum of its proper divisors (1).

81648000701 is an equidigital number, since it uses as much as digits as its factorization.

81648000701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 81648000701 in words is "eighty-one billion, six hundred forty-eight million, seven hundred one", and thus it is an aban number.