128252181123078 has 16 divisors (see below), whose sum is σ = 256506818580480. Its totient is φ = 42750317651976.

The previous prime is 128252181123041. The next prime is 128252181123179. The reversal of 128252181123078 is 870321181252821.

It is a self number, because there is not a number n which added to its sum of digits gives 128252181123078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101668150 + ... + 102921897.

It is an arithmetic number, because the mean of its divisors is an integer number (16031676161280).

Almost surely, 2^{128252181123078} is an apocalyptic number.

128252181123078 is an abundant number, since it is smaller than the sum of its proper divisors (128254637457402).

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

128252181123078 is a wasteful number, since it uses less digits than its factorization.

128252181123078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204694531.

The product of its (nonzero) digits is 860160, while the sum is 51.

The spelling of 128252181123078 in words is "one hundred twenty-eight trillion, two hundred fifty-two billion, one hundred eighty-one million, one hundred twenty-three thousand, seventy-eight".