42401344665 has 32 divisors (see below), whose sum is σ = 72088621056. Its totient is φ = 21208033280.

The previous prime is 42401344651. The next prime is 42401344673. The reversal of 42401344665 is 56644310424.

It is not a de Polignac number, because 42401344665 - 2²² = 42397150361 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224217 + ... + 367526.

It is an arithmetic number, because the mean of its divisors is an integer number (2252769408).

Almost surely, 2^42401344665 is an apocalyptic number.

It is an amenable number.

42401344665 is a deficient number, since it is larger than the sum of its proper divisors (29687276391).

42401344665 is a wasteful number, since it uses less digits than its factorization.

42401344665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592049.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 42401344665 in words is "forty-two billion, four hundred one million, three hundred forty-four thousand, six hundred sixty-five".