20426662204466 has 24 divisors (see below), whose sum is σ = 35646255225900. Its totient is φ = 8753347022112.

The previous prime is 20426662204457. The next prime is 20426662204469. The reversal of 20426662204466 is 66440226662402.

It can be written as a sum of positive squares in 2 ways, for example, as 15769357234225 + 4657304970241 = 3971065^2 + 2158079^2 .

It is not an unprimeable number, because it can be changed into a prime (20426662204469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10231265 + ... + 12063668.

Almost surely, 2^{20426662204466} is an apocalyptic number.

20426662204466 is a deficient number, since it is larger than the sum of its proper divisors (15219593021434).

20426662204466 is a wasteful number, since it uses less digits than its factorization.

20426662204466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22304298 (or 22304291 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 50.

Adding to 20426662204466 its reverse (66440226662402), we get a palindrome (86866888866868).

The spelling of 20426662204466 in words is "twenty trillion, four hundred twenty-six billion, six hundred sixty-two million, two hundred four thousand, four hundred sixty-six".