20523056306 has 16 divisors (see below), whose sum is σ = 31321263168. Its totient is φ = 10082979600.

The previous prime is 20523056303. The next prime is 20523056311. The reversal of 20523056306 is 60365032502.

It is not an unprimeable number, because it can be changed into a prime (20523056303) 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, 34361 + ... + 205491.

It is an arithmetic number, because the mean of its divisors is an integer number (1957578948).

Almost surely, 2^20523056306 is an apocalyptic number.

20523056306 is a deficient number, since it is larger than the sum of its proper divisors (10798206862).

20523056306 is a wasteful number, since it uses less digits than its factorization.

20523056306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172177.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 20523056306 its reverse (60365032502), we get a palindrome (80888088808).

The spelling of 20523056306 in words is "twenty billion, five hundred twenty-three million, fifty-six thousand, three hundred six".