426665239905 has 16 divisors (see below), whose sum is σ = 683222601600. Its totient is φ = 227368722048.

The previous prime is 426665239867. The next prime is 426665239909. The reversal of 426665239905 is 509932566624.

It is not a de Polignac number, because 426665239905 - 2¹¹ = 426665237857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (426665239909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11610580 + ... + 11647269.

It is an arithmetic number, because the mean of its divisors is an integer number (42701412600).

Almost surely, 2^426665239905 is an apocalyptic number.

It is an amenable number.

426665239905 is a deficient number, since it is larger than the sum of its proper divisors (256557361695).

426665239905 is a wasteful number, since it uses less digits than its factorization.

426665239905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23259080.

The product of its (nonzero) digits is 20995200, while the sum is 57.

The spelling of 426665239905 in words is "four hundred twenty-six billion, six hundred sixty-five million, two hundred thirty-nine thousand, nine hundred five".