9855091140589 has 4 divisors (see below), whose sum is σ = 9876468779100. Its totient is φ = 9833713502080.

The previous prime is 9855091140511. The next prime is 9855091140647. The reversal of 9855091140589 is 9850411905589.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1873805076900 + 7981286063689 = 1368870^2 + 2825117^2 .

It is a cyclic number.

It is not a de Polignac number, because 9855091140589 - 2¹⁵ = 9855091107821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9855091140589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9855091140509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10688818564 + ... + 10688819485.

It is an arithmetic number, because the mean of its divisors is an integer number (2469117194775).

Almost surely, 2^{9855091140589} is an apocalyptic number.

It is an amenable number.

9855091140589 is a deficient number, since it is larger than the sum of its proper divisors (21377638511).

9855091140589 is a wasteful number, since it uses less digits than its factorization.

9855091140589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21377638510.

The product of its (nonzero) digits is 23328000, while the sum is 64.

The spelling of 9855091140589 in words is "nine trillion, eight hundred fifty-five billion, ninety-one million, one hundred forty thousand, five hundred eighty-nine".