84755289589 has 2 divisors, whose sum is σ = 84755289590. Its totient is φ = 84755289588.

The previous prime is 84755289581. The next prime is 84755289653. The reversal of 84755289589 is 98598255748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83309008689 + 1446280900 = 288633^2 + 38030^2 .

It is a cyclic number.

It is not a de Polignac number, because 84755289589 - 2³ = 84755289581 is a prime.

It is a super-2 number, since 2×84755289589² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84755289581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42377644794 + 42377644795.

It is an arithmetic number, because the mean of its divisors is an integer number (42377644795).

Almost surely, 2^84755289589 is an apocalyptic number.

It is an amenable number.

84755289589 is a deficient number, since it is larger than the sum of its proper divisors (1).

84755289589 is an equidigital number, since it uses as much as digits as its factorization.

84755289589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304000, while the sum is 70.

The spelling of 84755289589 in words is "eighty-four billion, seven hundred fifty-five million, two hundred eighty-nine thousand, five hundred eighty-nine".