42344404665 has 48 divisors (see below), whose sum is σ = 70386778176. Its totient is φ = 21736915200.

The previous prime is 42344404651. The next prime is 42344404691. The reversal of 42344404665 is 56640444324.

It is a happy number.

It is not a de Polignac number, because 42344404665 - 2²⁰ = 42343356089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4170495 + ... + 4180635.

It is an arithmetic number, because the mean of its divisors is an integer number (1466391212).

Almost surely, 2^42344404665 is an apocalyptic number.

It is an amenable number.

42344404665 is a deficient number, since it is larger than the sum of its proper divisors (28042373511).

42344404665 is a wasteful number, since it uses less digits than its factorization.

42344404665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10538 (or 10509 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 42.

Adding to 42344404665 its reverse (56640444324), we get a palindrome (98984848989).

The spelling of 42344404665 in words is "forty-two billion, three hundred forty-four million, four hundred four thousand, six hundred sixty-five".