20400000600266 has 16 divisors (see below), whose sum is σ = 34971691545600. Its totient is φ = 8742791913840.

The previous prime is 20400000600191. The next prime is 20400000600271. The reversal of 20400000600266 is 66200600000402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3497066 + ... + 7282133.

It is an arithmetic number, because the mean of its divisors is an integer number (2185730721600).

Almost surely, 2^{20400000600266} is an apocalyptic number.

20400000600266 is a deficient number, since it is larger than the sum of its proper divisors (14571690945334).

20400000600266 is a wasteful number, since it uses less digits than its factorization.

20400000600266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10914389.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20400000600266 its reverse (66200600000402), we get a palindrome (86600600600668).

The spelling of 20400000600266 in words is "twenty trillion, four hundred billion, six hundred thousand, two hundred sixty-six".