3981153878660 has 96 divisors (see below), whose sum is σ = 9760185657600. Its totient is φ = 1363508100864.

The previous prime is 3981153878651. The next prime is 3981153878753. The reversal of 3981153878660 is 668783511893.

3981153878660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6118139 + ... + 6737501.

It is an arithmetic number, because the mean of its divisors is an integer number (101668600600).

Almost surely, 2^{3981153878660} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3981153878660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4880092828800).

3981153878660 is an abundant number, since it is smaller than the sum of its proper divisors (5779031778940).

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

3981153878660 is a wasteful number, since it uses less digits than its factorization.

3981153878660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620330 (or 620314 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 3981153878660 in words is "three trillion, nine hundred eighty-one billion, one hundred fifty-three million, eight hundred seventy-eight thousand, six hundred sixty".