16121387876 has 12 divisors (see below), whose sum is σ = 30777195120. Its totient is φ = 7327903560.

The previous prime is 16121387831. The next prime is 16121387897. The reversal of 16121387876 is 67878312161.

16121387876 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 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, 183197546 + ... + 183197633.

It is an arithmetic number, because the mean of its divisors is an integer number (2564766260).

Almost surely, 2^16121387876 is an apocalyptic number.

It is an amenable number.

16121387876 is a deficient number, since it is larger than the sum of its proper divisors (14655807244).

16121387876 is a wasteful number, since it uses less digits than its factorization.

16121387876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366395194 (or 366395192 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The spelling of 16121387876 in words is "sixteen billion, one hundred twenty-one million, three hundred eighty-seven thousand, eight hundred seventy-six".