3980644405746 has 64 divisors (see below), whose sum is σ = 8320370982912. Its totient is φ = 1267215630912.

The previous prime is 3980644405739. The next prime is 3980644405789. The reversal of 3980644405746 is 6475044460893.

It is a self number, because there is not a number n which added to its sum of digits gives 3980644405746.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290699676 + ... + 290713368.

It is an arithmetic number, because the mean of its divisors is an integer number (130005796608).

Almost surely, 2^{3980644405746} is an apocalyptic number.

3980644405746 is an abundant number, since it is smaller than the sum of its proper divisors (4339726577166).

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

3980644405746 is a wasteful number, since it uses less digits than its factorization.

3980644405746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16847.

The product of its (nonzero) digits is 69672960, while the sum is 60.

The spelling of 3980644405746 in words is "three trillion, nine hundred eighty billion, six hundred forty-four million, four hundred five thousand, seven hundred forty-six".