20889604673 has 8 divisors (see below), whose sum is σ = 24456122880. Its totient is φ = 17468658720.

The previous prime is 20889604657. The next prime is 20889604721. The reversal of 20889604673 is 37640698802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20889604673 - 2⁴ = 20889604657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20889604643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36392753 + ... + 36393326.

It is an arithmetic number, because the mean of its divisors is an integer number (3057015360).

Almost surely, 2^20889604673 is an apocalyptic number.

It is an amenable number.

20889604673 is a deficient number, since it is larger than the sum of its proper divisors (3566518207).

20889604673 is an equidigital number, since it uses as much as digits as its factorization.

20889604673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72786127.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 20889604673 in words is "twenty billion, eight hundred eighty-nine million, six hundred four thousand, six hundred seventy-three".