4002044020000 has 120 divisors (see below), whose sum is σ = 10602985330476. Its totient is φ = 1477677696000.

The previous prime is 4002044019971. The next prime is 4002044020019. The reversal of 4002044020000 is 204402004.

It can be written as a sum of positive squares in 10 ways, for example, as 880136680336 + 3121907339664 = 938156^2 + 1766892^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7436239 + ... + 7956238.

Almost surely, 2^{4002044020000} is an apocalyptic number.

4002044020000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4002044020000 is an abundant number, since it is smaller than the sum of its proper divisors (6600941310476).

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

4002044020000 is a wasteful number, since it uses less digits than its factorization.

4002044020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15392520 (or 15392497 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 4002044020000 its reverse (204402004), we get a palindrome (4002248422004).

The spelling of 4002044020000 in words is "four trillion, two billion, forty-four million, twenty thousand".