20358223563 has 4 divisors (see below), whose sum is σ = 27144298088. Its totient is φ = 13572149040.

The previous prime is 20358223547. The next prime is 20358223591. The reversal of 20358223563 is 36532285302.

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

It is not a de Polignac number, because 20358223563 - 2⁴ = 20358223547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20358223463) 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, 3393037258 + ... + 3393037263.

It is an arithmetic number, because the mean of its divisors is an integer number (6786074522).

Almost surely, 2^20358223563 is an apocalyptic number.

20358223563 is a deficient number, since it is larger than the sum of its proper divisors (6786074525).

20358223563 is an equidigital number, since it uses as much as digits as its factorization.

20358223563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786074524.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 20358223563 in words is "twenty billion, three hundred fifty-eight million, two hundred twenty-three thousand, five hundred sixty-three".