8128489796442 has 48 divisors (see below), whose sum is σ = 18291153054720. Its totient is φ = 2705470492032.

The previous prime is 8128489796437. The next prime is 8128489796467. The reversal of 8128489796442 is 2446979848218.

It is a happy number.

8128489796442 is a `hidden beast` number, since 8 + 1 + 2 + 8 + 4 + 8 + 97 + 96 + 442 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12098842 + ... + 12752997.

It is an arithmetic number, because the mean of its divisors is an integer number (381065688640).

Almost surely, 2^{8128489796442} is an apocalyptic number.

8128489796442 is an abundant number, since it is smaller than the sum of its proper divisors (10162663258278).

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

8128489796442 is a wasteful number, since it uses less digits than its factorization.

8128489796442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24852529 (or 24852517 counting only the distinct ones).

The product of its digits is 445906944, while the sum is 72.

The spelling of 8128489796442 in words is "eight trillion, one hundred twenty-eight billion, four hundred eighty-nine million, seven hundred ninety-six thousand, four hundred forty-two".