12433421665 has 32 divisors (see below), whose sum is σ = 18308934144. Its totient is φ = 7911214080.

The previous prime is 12433421657. The next prime is 12433421687. The reversal of 12433421665 is 56612433421.

It is not a de Polignac number, because 12433421665 - 2³ = 12433421657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104914 + ... + 189403.

It is an arithmetic number, because the mean of its divisors is an integer number (572154192).

Almost surely, 2^12433421665 is an apocalyptic number.

It is an amenable number.

12433421665 is a deficient number, since it is larger than the sum of its proper divisors (5875512479).

12433421665 is a wasteful number, since it uses less digits than its factorization.

12433421665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294417.

The product of its digits is 103680, while the sum is 37.

The spelling of 12433421665 in words is "twelve billion, four hundred thirty-three million, four hundred twenty-one thousand, six hundred sixty-five".