42366546255665 has 16 divisors (see below), whose sum is σ = 53830617171840. Its totient is φ = 31899409370880.

The previous prime is 42366546255653. The next prime is 42366546255667. The reversal of 42366546255665 is 56655264566324.

It is a happy number.

It is not a de Polignac number, because 42366546255665 - 2¹⁸ = 42366545993521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42366546255667) 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, 31899020 + ... + 33200610.

It is an arithmetic number, because the mean of its divisors is an integer number (3364413573240).

Almost surely, 2^{42366546255665} is an apocalyptic number.

It is an amenable number.

42366546255665 is a deficient number, since it is larger than the sum of its proper divisors (11464070916175).

42366546255665 is a wasteful number, since it uses less digits than its factorization.

42366546255665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684552.

The product of its digits is 933120000, while the sum is 65.

The spelling of 42366546255665 in words is "forty-two trillion, three hundred sixty-six billion, five hundred forty-six million, two hundred fifty-five thousand, six hundred sixty-five".