84113540789 has 2 divisors, whose sum is σ = 84113540790. Its totient is φ = 84113540788.

The previous prime is 84113540779. The next prime is 84113540803. The reversal of 84113540789 is 98704531148.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79538100625 + 4575440164 = 282025^2 + 67642^2 .

It is a cyclic number.

It is not a de Polignac number, because 84113540789 - 2⁴ = 84113540773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84113540779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42056770394 + 42056770395.

It is an arithmetic number, because the mean of its divisors is an integer number (42056770395).

Almost surely, 2^84113540789 is an apocalyptic number.

It is an amenable number.

84113540789 is a deficient number, since it is larger than the sum of its proper divisors (1).

84113540789 is an equidigital number, since it uses as much as digits as its factorization.

84113540789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 84113540789 in words is "eighty-four billion, one hundred thirteen million, five hundred forty thousand, seven hundred eighty-nine".