4021444431312 has 160 divisors (see below), whose sum is σ = 13073234402304. Its totient is φ = 1034768947200.

The previous prime is 4021444431281. The next prime is 4021444431353. The reversal of 4021444431312 is 2131344441204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4688889 + ... + 5479832.

Almost surely, 2^{4021444431312} is an apocalyptic number.

4021444431312 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4021444431312 is an abundant number, since it is smaller than the sum of its proper divisors (9051789970992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021444431312 is a wasteful number, since it uses less digits than its factorization.

4021444431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168857 (or 10168851 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 4021444431312 its reverse (2131344441204), we get a palindrome (6152788872516).

The spelling of 4021444431312 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred thirty-one thousand, three hundred twelve".