84187748741 has 2 divisors, whose sum is σ = 84187748742. Its totient is φ = 84187748740.

The previous prime is 84187748719. The next prime is 84187748779. The reversal of 84187748741 is 14784778148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45388598116 + 38799150625 = 213046^2 + 196975^2 .

It is a cyclic number.

It is not a de Polignac number, because 84187748741 - 2¹⁰ = 84187747717 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 (84187748791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42093874370 + 42093874371.

It is an arithmetic number, because the mean of its divisors is an integer number (42093874371).

Almost surely, 2^84187748741 is an apocalyptic number.

It is an amenable number.

84187748741 is a deficient number, since it is larger than the sum of its proper divisors (1).

84187748741 is an equidigital number, since it uses as much as digits as its factorization.

84187748741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11239424, while the sum is 59.

The spelling of 84187748741 in words is "eighty-four billion, one hundred eighty-seven million, seven hundred forty-eight thousand, seven hundred forty-one".