12128977848 has 64 divisors (see below), whose sum is σ = 33451437600. Its totient is φ = 3640965120.

The previous prime is 12128977843. The next prime is 12128977859. The reversal of 12128977848 is 84877982121.

It is a happy number.

12128977848 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12128977848² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128977843) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 461293 + ... + 486876.

Almost surely, 2^12128977848 is an apocalyptic number.

It is an amenable number.

12128977848 is an abundant number, since it is smaller than the sum of its proper divisors (21322459752).

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

12128977848 is a wasteful number, since it uses less digits than its factorization.

12128977848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948232 (or 948228 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 57.

The spelling of 12128977848 in words is "twelve billion, one hundred twenty-eight million, nine hundred seventy-seven thousand, eight hundred forty-eight".