20011423121343 has 24 divisors (see below), whose sum is σ = 30991575982640. Its totient is φ = 12760907488560.

The previous prime is 20011423121341. The next prime is 20011423121381. The reversal of 20011423121343 is 34312132411002.

20011423121343 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 1 + 4 + 2 + 312 + 1 + 343 = 666.

It is not a de Polignac number, because 20011423121343 - 2¹ = 20011423121341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011423121341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 700518628 + ... + 700547193.

Almost surely, 2^{20011423121343} is an apocalyptic number.

20011423121343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20011423121343 is a deficient number, since it is larger than the sum of its proper divisors (10980152861297).

20011423121343 is a wasteful number, since it uses less digits than its factorization.

20011423121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401065876 (or 1401065847 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 20011423121343 its reverse (34312132411002), we get a palindrome (54323555532345).

The spelling of 20011423121343 in words is "twenty trillion, eleven billion, four hundred twenty-three million, one hundred twenty-one thousand, three hundred forty-three".