20310120644003 has 8 divisors (see below), whose sum is σ = 21504897687888. Its totient is φ = 19115350718464.

The previous prime is 20310120643999. The next prime is 20310120644017. The reversal of 20310120644003 is 30044602101302.

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 20310120644003 - 2² = 20310120643999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310120641003) by changing a digit.

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, 4787000 + ... + 7970922.

It is an arithmetic number, because the mean of its divisors is an integer number (2688112210986).

Almost surely, 2^{20310120644003} is an apocalyptic number.

20310120644003 is a deficient number, since it is larger than the sum of its proper divisors (1194777043885).

20310120644003 is a wasteful number, since it uses less digits than its factorization.

20310120644003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559173.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20310120644003 its reverse (30044602101302), we get a palindrome (50354722745305).

The spelling of 20310120644003 in words is "twenty trillion, three hundred ten billion, one hundred twenty million, six hundred forty-four thousand, three".