4021440243985 has 8 divisors (see below), whose sum is σ = 4825790012736. Its totient is φ = 3217111048560.

The previous prime is 4021440243979. The next prime is 4021440244039. The reversal of 4021440243985 is 5893420441204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4021440243985 - 2¹⁹ = 4021439719697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4709979 + ... + 5497888.

It is an arithmetic number, because the mean of its divisors is an integer number (603223751592).

Almost surely, 2^{4021440243985} is an apocalyptic number.

It is an amenable number.

4021440243985 is a deficient number, since it is larger than the sum of its proper divisors (804349768751).

4021440243985 is a wasteful number, since it uses less digits than its factorization.

4021440243985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10286663.

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 4021440243985 in words is "four trillion, twenty-one billion, four hundred forty million, two hundred forty-three thousand, nine hundred eighty-five".