20023205523 has 8 divisors (see below), whose sum is σ = 28268054928. Its totient is φ = 12563579904.

The previous prime is 20023205491. The next prime is 20023205533. The reversal of 20023205523 is 32550232002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20023205523 - 2⁵ = 20023205491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20023205493 and 20023205502.

It is not an unprimeable number, because it can be changed into a prime (20023205533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196305886 + ... + 196305987.

It is an arithmetic number, because the mean of its divisors is an integer number (3533506866).

Almost surely, 2^20023205523 is an apocalyptic number.

20023205523 is a deficient number, since it is larger than the sum of its proper divisors (8244849405).

20023205523 is a wasteful number, since it uses less digits than its factorization.

20023205523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392611893.

The product of its (nonzero) digits is 3600, while the sum is 24.

Adding to 20023205523 its reverse (32550232002), we get a palindrome (52573437525).

The spelling of 20023205523 in words is "twenty billion, twenty-three million, two hundred five thousand, five hundred twenty-three".