20864382347 has 8 divisors (see below), whose sum is σ = 20950830144. Its totient is φ = 20778089728.

The previous prime is 20864382337. The next prime is 20864382349. The reversal of 20864382347 is 74328346802.

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 20864382347 - 2³⁴ = 3684513163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20864382349) 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, 234638 + ... + 311100.

It is an arithmetic number, because the mean of its divisors is an integer number (2618853768).

Almost surely, 2^20864382347 is an apocalyptic number.

20864382347 is a deficient number, since it is larger than the sum of its proper divisors (86447797).

20864382347 is an equidigital number, since it uses as much as digits as its factorization.

20864382347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77589.

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 20864382347 in words is "twenty billion, eight hundred sixty-four million, three hundred eighty-two thousand, three hundred forty-seven".