20068534289 has 12 divisors (see below), whose sum is σ = 21304135404. Its totient is φ = 18839181312.

The previous prime is 20068534279. The next prime is 20068534301. The reversal of 20068534289 is 98243586002.

It can be written as a sum of positive squares in 6 ways, for example, as 14502180625 + 5566353664 = 120425^2 + 74608^2 .

It is not a de Polignac number, because 20068534289 - 2⁴ = 20068534273 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20068534279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2840249 + ... + 2847305.

It is an arithmetic number, because the mean of its divisors is an integer number (1775344617).

Almost surely, 2^20068534289 is an apocalyptic number.

It is an amenable number.

20068534289 is a deficient number, since it is larger than the sum of its proper divisors (1235601115).

20068534289 is an frugal number, since it uses more digits than its factorization.

20068534289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892 (or 7483 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 20068534289 in words is "twenty billion, sixty-eight million, five hundred thirty-four thousand, two hundred eighty-nine".