20327449289 has 8 divisors (see below), whose sum is σ = 24241430400. Its totient is φ = 16665983136.

The previous prime is 20327449279. The next prime is 20327449309. The reversal of 20327449289 is 98294472302.

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 20327449289 - 2⁴ = 20327449273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20327449229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63128564 + ... + 63128885.

It is an arithmetic number, because the mean of its divisors is an integer number (3030178800).

Almost surely, 2^20327449289 is an apocalyptic number.

It is an amenable number.

20327449289 is a deficient number, since it is larger than the sum of its proper divisors (3913981111).

20327449289 is a wasteful number, since it uses less digits than its factorization.

20327449289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126257479.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 20327449289 in words is "twenty billion, three hundred twenty-seven million, four hundred forty-nine thousand, two hundred eighty-nine".