3948043813840 has 40 divisors (see below), whose sum is σ = 10490516421120. Its totient is φ = 1353615021696.

The previous prime is 3948043813793. The next prime is 3948043813843. The reversal of 3948043813840 is 483183408493.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3948043813843) 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, 3525038560 + ... + 3525039679.

It is an arithmetic number, because the mean of its divisors is an integer number (262262910528).

Almost surely, 2^{3948043813840} is an apocalyptic number.

It is an amenable number.

3948043813840 is an abundant number, since it is smaller than the sum of its proper divisors (6542472607280).

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

3948043813840 is a wasteful number, since it uses less digits than its factorization.

3948043813840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050078259 (or 7050078253 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 3948043813840 in words is "three trillion, nine hundred forty-eight billion, forty-three million, eight hundred thirteen thousand, eight hundred forty".