440066630255555 has 4 divisors (see below), whose sum is σ = 528079956306672. Its totient is φ = 352053304204440.

The previous prime is 440066630255521. The next prime is 440066630255557. The reversal of 440066630255555 is 555552036660044.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 440066630255555 - 2⁶ = 440066630255491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440066630255555.

It is not an unprimeable number, because it can be changed into a prime (440066630255557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44006663025551 + ... + 44006663025560.

It is an arithmetic number, because the mean of its divisors is an integer number (132019989076668).

Almost surely, 2^{440066630255555} is an apocalyptic number.

440066630255555 is a deficient number, since it is larger than the sum of its proper divisors (88013326051117).

440066630255555 is an equidigital number, since it uses as much as digits as its factorization.

440066630255555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88013326051116.

The product of its (nonzero) digits is 64800000, while the sum is 56.

The spelling of 440066630255555 in words is "four hundred forty trillion, sixty-six billion, six hundred thirty million, two hundred fifty-five thousand, five hundred fifty-five".