20411342223523 has 4 divisors (see below), whose sum is σ = 21612009413160. Its totient is φ = 19210675033888.

The previous prime is 20411342223469. The next prime is 20411342223527. The reversal of 20411342223523 is 32532224311402.

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 20411342223523 - 2³³ = 20402752288931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20411342223527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600333594793 + ... + 600333594826.

It is an arithmetic number, because the mean of its divisors is an integer number (5403002353290).

Almost surely, 2^{20411342223523} is an apocalyptic number.

20411342223523 is a deficient number, since it is larger than the sum of its proper divisors (1200667189637).

20411342223523 is a wasteful number, since it uses less digits than its factorization.

20411342223523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200667189636.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 20411342223523 its reverse (32532224311402), we get a palindrome (52943566534925).

The spelling of 20411342223523 in words is "twenty trillion, four hundred eleven billion, three hundred forty-two million, two hundred twenty-three thousand, five hundred twenty-three".