20660453106 has 16 divisors (see below), whose sum is σ = 41347294464. Its totient is φ = 6882419664.

The previous prime is 20660453101. The next prime is 20660453153. The reversal of 20660453106 is 60135406602.

It is not an unprimeable number, because it can be changed into a prime (20660453101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089325 + ... + 1108128.

It is an arithmetic number, because the mean of its divisors is an integer number (2584205904).

Almost surely, 2^20660453106 is an apocalyptic number.

20660453106 is an abundant number, since it is smaller than the sum of its proper divisors (20686841358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20660453106 is a wasteful number, since it uses less digits than its factorization.

20660453106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199025.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20660453106 its reverse (60135406602), we get a palindrome (80795859708).

The spelling of 20660453106 in words is "twenty billion, six hundred sixty million, four hundred fifty-three thousand, one hundred six".