3871121426828 has 12 divisors (see below), whose sum is σ = 6774614225232. Its totient is φ = 1935517362480.

The previous prime is 3871121426797. The next prime is 3871121426839. The reversal of 3871121426828 is 8286241211783.

It is a super-2 number, since 2×3871121426828² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3871121426828.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10636400 + ... + 10994327.

It is an arithmetic number, because the mean of its divisors is an integer number (564551185436).

Almost surely, 2^{3871121426828} is an apocalyptic number.

It is an amenable number.

3871121426828 is a deficient number, since it is larger than the sum of its proper divisors (2903492798404).

3871121426828 is a wasteful number, since it uses less digits than its factorization.

3871121426828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21675472 (or 21675470 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 53.

The spelling of 3871121426828 in words is "three trillion, eight hundred seventy-one billion, one hundred twenty-one million, four hundred twenty-six thousand, eight hundred twenty-eight".