2855109289589 has 2 divisors, whose sum is σ = 2855109289590. Its totient is φ = 2855109289588.

The previous prime is 2855109289577. The next prime is 2855109289723. The reversal of 2855109289589 is 9859829015582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2098586822500 + 756522467089 = 1448650^2 + 869783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855109289589 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 (2855109289559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427554644794 + 1427554644795.

It is an arithmetic number, because the mean of its divisors is an integer number (1427554644795).

Almost surely, 2^{2855109289589} is an apocalyptic number.

It is an amenable number.

2855109289589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855109289589 is an equidigital number, since it uses as much as digits as its factorization.

2855109289589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624000, while the sum is 71.

The spelling of 2855109289589 in words is "two trillion, eight hundred fifty-five billion, one hundred nine million, two hundred eighty-nine thousand, five hundred eighty-nine".