20446626466 has 16 divisors (see below), whose sum is σ = 35055198720. Its totient is φ = 8761880160.

The previous prime is 20446626449. The next prime is 20446626467. The reversal of 20446626466 is 66462664402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20446626467) 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, 60975 + ... + 211213.

It is an arithmetic number, because the mean of its divisors is an integer number (2190949920).

Almost surely, 2^20446626466 is an apocalyptic number.

20446626466 is a deficient number, since it is larger than the sum of its proper divisors (14608572254).

20446626466 is a wasteful number, since it uses less digits than its factorization.

20446626466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159969.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 20446626466 in words is "twenty billion, four hundred forty-six million, six hundred twenty-six thousand, four hundred sixty-six".