3978039801804 has 24 divisors (see below), whose sum is σ = 9282180069120. Its totient is φ = 1326000810384.

The previous prime is 3978039801797. The next prime is 3978039801809. The reversal of 3978039801804 is 4081089308793.

It is not an unprimeable number, because it can be changed into a prime (3978039801809) 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, 177624 + ... + 2826239.

It is an arithmetic number, because the mean of its divisors is an integer number (386757502880).

Almost surely, 2^{3978039801804} is an apocalyptic number.

It is an amenable number.

3978039801804 is an abundant number, since it is smaller than the sum of its proper divisors (5304140267316).

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

3978039801804 is a wasteful number, since it uses less digits than its factorization.

3978039801804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114229 (or 3114227 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 3978039801804 in words is "three trillion, nine hundred seventy-eight billion, thirty-nine million, eight hundred one thousand, eight hundred four".