3916780138880 has 64 divisors (see below), whose sum is σ = 10701202891680. Its totient is φ = 1342896046080.

The previous prime is 3916780138861. The next prime is 3916780138889. The reversal of 3916780138880 is 888310876193.

3916780138880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3916780138889) 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, 437136161 + ... + 437145120.

Almost surely, 2^{3916780138880} is an apocalyptic number.

It is an amenable number.

3916780138880 is an abundant number, since it is smaller than the sum of its proper divisors (6784422752800).

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

3916780138880 is an equidigital number, since it uses as much as digits as its factorization.

3916780138880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874281307 (or 874281295 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 3916780138880 in words is "three trillion, nine hundred sixteen billion, seven hundred eighty million, one hundred thirty-eight thousand, eight hundred eighty".