20505116006 has 8 divisors (see below), whose sum is σ = 30794868360. Its totient is φ = 10240159888.

The previous prime is 20505116003. The next prime is 20505116011. The reversal of 20505116006 is 60061150502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20505116003) 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, 6196991 + ... + 6200298.

It is an arithmetic number, because the mean of its divisors is an integer number (3849358545).

Almost surely, 2^20505116006 is an apocalyptic number.

20505116006 is a deficient number, since it is larger than the sum of its proper divisors (10289752354).

20505116006 is a wasteful number, since it uses less digits than its factorization.

20505116006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12398118.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 20505116006 its reverse (60061150502), we get a palindrome (80566266508).

The spelling of 20505116006 in words is "twenty billion, five hundred five million, one hundred sixteen thousand, six".