20323145255253 has 16 divisors (see below), whose sum is σ = 27401405908800. Its totient is φ = 13397172940800.

The previous prime is 20323145255207. The next prime is 20323145255263. The reversal of 20323145255253 is 35255254132302.

It is not a de Polignac number, because 20323145255253 - 2¹⁰ = 20323145254229 is a prime.

It is a super-2 number, since 2×20323145255253² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323145255263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43377583 + ... + 43843596.

It is an arithmetic number, because the mean of its divisors is an integer number (1712587869300).

Almost surely, 2^{20323145255253} is an apocalyptic number.

It is an amenable number.

20323145255253 is a deficient number, since it is larger than the sum of its proper divisors (7078260653547).

20323145255253 is a wasteful number, since it uses less digits than its factorization.

20323145255253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87222052.

The product of its (nonzero) digits is 1080000, while the sum is 42.

Adding to 20323145255253 its reverse (35255254132302), we get a palindrome (55578399387555).

The spelling of 20323145255253 in words is "twenty trillion, three hundred twenty-three billion, one hundred forty-five million, two hundred fifty-five thousand, two hundred fifty-three".