20321030153305 has 32 divisors (see below), whose sum is σ = 27919772649216. Its totient is φ = 13908973688064.

The previous prime is 20321030153279. The next prime is 20321030153353. The reversal of 20321030153305 is 50335103012302.

It is not a de Polignac number, because 20321030153305 - 2²³ = 20321021764697 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 52452567 + ... + 52838563.

It is an arithmetic number, because the mean of its divisors is an integer number (872492895288).

Almost surely, 2^{20321030153305} is an apocalyptic number.

It is an amenable number.

20321030153305 is a deficient number, since it is larger than the sum of its proper divisors (7598742495911).

20321030153305 is a wasteful number, since it uses less digits than its factorization.

20321030153305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388753.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 20321030153305 its reverse (50335103012302), we get a palindrome (70656133165607).

The spelling of 20321030153305 in words is "twenty trillion, three hundred twenty-one billion, thirty million, one hundred fifty-three thousand, three hundred five".