4021443441078 has 64 divisors (see below), whose sum is σ = 9735704824320. Its totient is φ = 1081048131072.

The previous prime is 4021443441077. The next prime is 4021443441079. The reversal of 4021443441078 is 8701443441204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4021443441077) and next prime (4021443441079).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021443441077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1314025 + ... + 3125627.

It is an arithmetic number, because the mean of its divisors is an integer number (152120387880).

Almost surely, 2^{4021443441078} is an apocalyptic number.

4021443441078 is an abundant number, since it is smaller than the sum of its proper divisors (5714261383242).

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

4021443441078 is a wasteful number, since it uses less digits than its factorization.

4021443441078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814741.

The product of its (nonzero) digits is 344064, while the sum is 42.

The spelling of 4021443441078 in words is "four trillion, twenty-one billion, four hundred forty-three million, four hundred forty-one thousand, seventy-eight".