20664050104 has 16 divisors (see below), whose sum is σ = 38947950720. Its totient is φ = 10277929920.

The previous prime is 20664050087. The next prime is 20664050107. The reversal of 20664050104 is 40105046602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20664050107) 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, 6760269 + ... + 6763324.

It is an arithmetic number, because the mean of its divisors is an integer number (2434246920).

Almost surely, 2^20664050104 is an apocalyptic number.

It is an amenable number.

20664050104 is a deficient number, since it is larger than the sum of its proper divisors (18283900616).

20664050104 is a wasteful number, since it uses less digits than its factorization.

20664050104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13523790 (or 13523786 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20664050104 its reverse (40105046602), we get a palindrome (60769096706).

The spelling of 20664050104 in words is "twenty billion, six hundred sixty-four million, fifty thousand, one hundred four".