20423150353205 has 8 divisors (see below), whose sum is σ = 25573336094592. Its totient is φ = 15628149835408.

The previous prime is 20423150353189. The next prime is 20423150353261. The reversal of 20423150353205 is 50235305132402.

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 20423150353205 - 2⁴ = 20423150353189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88796305769 + ... + 88796305998.

It is an arithmetic number, because the mean of its divisors is an integer number (3196667011824).

Almost surely, 2^{20423150353205} is an apocalyptic number.

It is an amenable number.

20423150353205 is a deficient number, since it is larger than the sum of its proper divisors (5150185741387).

20423150353205 is a wasteful number, since it uses less digits than its factorization.

20423150353205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177592611795.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 20423150353205 its reverse (50235305132402), we get a palindrome (70658455485607).

The spelling of 20423150353205 in words is "twenty trillion, four hundred twenty-three billion, one hundred fifty million, three hundred fifty-three thousand, two hundred five".