128738563626028 has 12 divisors (see below), whose sum is σ = 238544985542472. Its totient is φ = 60582853471040.

The previous prime is 128738563626019. The next prime is 128738563626041. The reversal of 128738563626028 is 820626365837821.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946607085418 + ... + 946607085553.

It is an arithmetic number, because the mean of its divisors is an integer number (19878748795206).

Almost surely, 2^{128738563626028} is an apocalyptic number.

It is an amenable number.

128738563626028 is a deficient number, since it is larger than the sum of its proper divisors (109806421916444).

128738563626028 is a wasteful number, since it uses less digits than its factorization.

128738563626028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893214170992 (or 1893214170990 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 67.

The spelling of 128738563626028 in words is "one hundred twenty-eight trillion, seven hundred thirty-eight billion, five hundred sixty-three million, six hundred twenty-six thousand, twenty-eight".