20822230859 has 4 divisors (see below), whose sum is σ = 20822609616. Its totient is φ = 20821852104.

The previous prime is 20822230841. The next prime is 20822230873. The reversal of 20822230859 is 95803222802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20822230859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20822230879) 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, 89279 + ... + 222744.

It is an arithmetic number, because the mean of its divisors is an integer number (5205652404).

Almost surely, 2^20822230859 is an apocalyptic number.

20822230859 is a deficient number, since it is larger than the sum of its proper divisors (378757).

20822230859 is an equidigital number, since it uses as much as digits as its factorization.

20822230859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378756.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 20822230859 in words is "twenty billion, eight hundred twenty-two million, two hundred thirty thousand, eight hundred fifty-nine".