20465411266 has 16 divisors (see below), whose sum is σ = 30906003960. Its totient is φ = 10163462400.

The previous prime is 20465411261. The next prime is 20465411297. The reversal of 20465411266 is 66211456402.

It can be written as a sum of positive squares in 4 ways, for example, as 15025611241 + 5439800025 = 122579^2 + 73755^2 .

It is not an unprimeable number, because it can be changed into a prime (20465411261) 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, 867880 + ... + 891148.

Almost surely, 2^20465411266 is an apocalyptic number.

20465411266 is a deficient number, since it is larger than the sum of its proper divisors (10440592694).

20465411266 is a wasteful number, since it uses less digits than its factorization.

20465411266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26229.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 20465411266 its reverse (66211456402), we get a palindrome (86676867668).

The spelling of 20465411266 in words is "twenty billion, four hundred sixty-five million, four hundred eleven thousand, two hundred sixty-six".