42404043255665 has 32 divisors (see below), whose sum is σ = 63562249040640. Its totient is φ = 26439759016704.

The previous prime is 42404043255599. The next prime is 42404043255671. The reversal of 42404043255665 is 56655234040424.

It is a cyclic number.

It is not a de Polignac number, because 42404043255665 - 2¹⁴ = 42404043239281 is a prime.

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, 695459810 + ... + 695520779.

It is an arithmetic number, because the mean of its divisors is an integer number (1986320282520).

Almost surely, 2^{42404043255665} is an apocalyptic number.

It is an amenable number.

42404043255665 is a deficient number, since it is larger than the sum of its proper divisors (21158205784975).

42404043255665 is a wasteful number, since it uses less digits than its factorization.

42404043255665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390980681.

The product of its (nonzero) digits is 13824000, while the sum is 50.

The spelling of 42404043255665 in words is "forty-two trillion, four hundred four billion, forty-three million, two hundred fifty-five thousand, six hundred sixty-five".