20310120652605 has 256 divisors, whose sum is σ = 41011385425920. Its totient is φ = 8371349913600.

The previous prime is 20310120652573. The next prime is 20310120652709. The reversal of 20310120652605 is 50625602101302.

It is not a de Polignac number, because 20310120652605 - 2⁵ = 20310120652573 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 4823108950 + ... + 4823113160.

It is an arithmetic number, because the mean of its divisors is an integer number (160200724320).

Almost surely, 2^{20310120652605} is an apocalyptic number.

It is an amenable number.

20310120652605 is an abundant number, since it is smaller than the sum of its proper divisors (20701264773315).

20310120652605 is a wasteful number, since it uses less digits than its factorization.

20310120652605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 20310120652605 its reverse (50625602101302), we get a palindrome (70935722753907).

The spelling of 20310120652605 in words is "twenty trillion, three hundred ten billion, one hundred twenty million, six hundred fifty-two thousand, six hundred five".