3886750566891 has 24 divisors (see below), whose sum is σ = 5669580130656. Its totient is φ = 2565612593280.

The previous prime is 3886750566887. The next prime is 3886750566917. The reversal of 3886750566891 is 1986650576883.

It is a happy number.

3886750566891 is a `hidden beast` number, since 3 + 8 + 8 + 6 + 7 + 50 + 566 + 8 + 9 + 1 = 666.

3886750566891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3886750566891 - 2² = 3886750566887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3886750566821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5723481 + ... + 6366453.

It is an arithmetic number, because the mean of its divisors is an integer number (236232505444).

Almost surely, 2^{3886750566891} is an apocalyptic number.

3886750566891 is a deficient number, since it is larger than the sum of its proper divisors (1782829563765).

3886750566891 is a wasteful number, since it uses less digits than its factorization.

3886750566891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649603 (or 649600 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 72.

The spelling of 3886750566891 in words is "three trillion, eight hundred eighty-six billion, seven hundred fifty million, five hundred sixty-six thousand, eight hundred ninety-one".