4021444378808 has 32 divisors (see below), whose sum is σ = 7553588160000. Its totient is φ = 2007155414880.

The previous prime is 4021444378807. The next prime is 4021444378937. The reversal of 4021444378808 is 8088734441204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4021444378808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021444378801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27585293 + ... + 27730691.

It is an arithmetic number, because the mean of its divisors is an integer number (236049630000).

Almost surely, 2^{4021444378808} is an apocalyptic number.

It is an amenable number.

4021444378808 is a deficient number, since it is larger than the sum of its proper divisors (3532143781192).

4021444378808 is a wasteful number, since it uses less digits than its factorization.

4021444378808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151515 (or 151511 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 53.

The spelling of 4021444378808 in words is "four trillion, twenty-one billion, four hundred forty-four million, three hundred seventy-eight thousand, eight hundred eight".