84549117361 has 2 divisors, whose sum is σ = 84549117362. Its totient is φ = 84549117360.

The previous prime is 84549117343. The next prime is 84549117371. The reversal of 84549117361 is 16371194548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51912888336 + 32636229025 = 227844^2 + 180655^2 .

It is a cyclic number.

It is not a de Polignac number, because 84549117361 - 2³³ = 75959182769 is a prime.

It is not a weakly prime, because it can be changed into another prime (84549117371) 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, 42274558680 + 42274558681.

It is an arithmetic number, because the mean of its divisors is an integer number (42274558681).

Almost surely, 2^84549117361 is an apocalyptic number.

It is an amenable number.

84549117361 is a deficient number, since it is larger than the sum of its proper divisors (1).

84549117361 is an equidigital number, since it uses as much as digits as its factorization.

84549117361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The spelling of 84549117361 in words is "eighty-four billion, five hundred forty-nine million, one hundred seventeen thousand, three hundred sixty-one".