27831254988889 has 12 divisors (see below), whose sum is σ = 30591580361328. Its totient is φ = 25300974732440.

The previous prime is 27831254988863. The next prime is 27831254988961. The reversal of 27831254988889 is 98888945213872.

It is not a de Polignac number, because 27831254988889 - 2²⁹ = 27830718117977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27831254982889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20118762 + ... + 21457564.

It is an arithmetic number, because the mean of its divisors is an integer number (2549298363444).

Almost surely, 2^{27831254988889} is an apocalyptic number.

It is an amenable number.

27831254988889 is a deficient number, since it is larger than the sum of its proper divisors (2760325372439).

27831254988889 is a wasteful number, since it uses less digits than its factorization.

27831254988889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510628 (or 1510617 counting only the distinct ones).

The product of its digits is 4459069440, while the sum is 82.

The spelling of 27831254988889 in words is "twenty-seven trillion, eight hundred thirty-one billion, two hundred fifty-four million, nine hundred eighty-eight thousand, eight hundred eighty-nine".