20423255335143 has 4 divisors (see below), whose sum is σ = 27231007113528. Its totient is φ = 13615503556760.

The previous prime is 20423255335129. The next prime is 20423255335177. The reversal of 20423255335143 is 34153355232402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20423255335143 - 2²⁶ = 20423188226279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20423255335095 and 20423255335104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423255335643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3403875889188 + ... + 3403875889193.

It is an arithmetic number, because the mean of its divisors is an integer number (6807751778382).

Almost surely, 2^{20423255335143} is an apocalyptic number.

20423255335143 is a deficient number, since it is larger than the sum of its proper divisors (6807751778385).

20423255335143 is an equidigital number, since it uses as much as digits as its factorization.

20423255335143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6807751778384.

The product of its (nonzero) digits is 1296000, while the sum is 42.

The spelling of 20423255335143 in words is "twenty trillion, four hundred twenty-three billion, two hundred fifty-five million, three hundred thirty-five thousand, one hundred forty-three".