20083679689 has 4 divisors (see below), whose sum is σ = 20084231700. Its totient is φ = 20083127680.

The previous prime is 20083679683. The next prime is 20083679701. The reversal of 20083679689 is 98697638002.

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 6315004089 + 13768675600 = 79467^2 + 117340^2 .

It is a cyclic number.

It is not a de Polignac number, because 20083679689 - 2¹¹ = 20083677641 is a prime.

It is a super-2 number, since 2×20083679689² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20083679683) 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, 217264 + ... + 295585.

It is an arithmetic number, because the mean of its divisors is an integer number (5021057925).

Almost surely, 2^20083679689 is an apocalyptic number.

It is an amenable number.

20083679689 is a deficient number, since it is larger than the sum of its proper divisors (552011).

20083679689 is an equidigital number, since it uses as much as digits as its factorization.

20083679689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552010.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 20083679689 in words is "twenty billion, eighty-three million, six hundred seventy-nine thousand, six hundred eighty-nine".