121828149816 has 64 divisors (see below), whose sum is σ = 306930293280. Its totient is φ = 40294993920.

The previous prime is 121828149811. The next prime is 121828149823. The reversal of 121828149816 is 618941828121.

121828149816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121828149811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8795056 + ... + 8808896.

Almost surely, 2^121828149816 is an apocalyptic number.

It is an amenable number.

121828149816 is an abundant number, since it is smaller than the sum of its proper divisors (185102143464).

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

121828149816 is a wasteful number, since it uses less digits than its factorization.

121828149816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664 (or 16660 counting only the distinct ones).

The product of its digits is 442368, while the sum is 51.

The spelling of 121828149816 in words is "one hundred twenty-one billion, eight hundred twenty-eight million, one hundred forty-nine thousand, eight hundred sixteen".