81484551359 has 2 divisors, whose sum is σ = 81484551360. Its totient is φ = 81484551358.

The previous prime is 81484551353. The next prime is 81484551361. The reversal of 81484551359 is 95315548418.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81484551359 is a prime.

It is a super-2 number, since 2×81484551359² (a number of 23 digits) contains 22 as substring.

Together with 81484551361, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81484551359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81484551353) 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, 40742275679 + 40742275680.

It is an arithmetic number, because the mean of its divisors is an integer number (40742275680).

Almost surely, 2^81484551359 is an apocalyptic number.

81484551359 is a deficient number, since it is larger than the sum of its proper divisors (1).

81484551359 is an equidigital number, since it uses as much as digits as its factorization.

81484551359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456000, while the sum is 53.

The spelling of 81484551359 in words is "eighty-one billion, four hundred eighty-four million, five hundred fifty-one thousand, three hundred fifty-nine".