20896934659 has 4 divisors (see below), whose sum is σ = 20906835840. Its totient is φ = 20887033480.

The previous prime is 20896934609. The next prime is 20896934693. The reversal of 20896934659 is 95643969802.

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

It is a cyclic number.

It is not a de Polignac number, because 20896934659 - 2²⁹ = 20360063747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20896934597 and 20896934606.

It is not an unprimeable number, because it can be changed into a prime (20896934609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4947424 + ... + 4951645.

It is an arithmetic number, because the mean of its divisors is an integer number (5226708960).

Almost surely, 2^20896934659 is an apocalyptic number.

20896934659 is a deficient number, since it is larger than the sum of its proper divisors (9901181).

20896934659 is an equidigital number, since it uses as much as digits as its factorization.

20896934659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9901180.

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 20896934659 in words is "twenty billion, eight hundred ninety-six million, nine hundred thirty-four thousand, six hundred fifty-nine".