128278222098 has 16 divisors (see below), whose sum is σ = 276291555456. Its totient is φ = 39470222160.

The previous prime is 128278222091. The next prime is 128278222099. The reversal of 128278222098 is 890222872821.

It is a self number, because there is not a number n which added to its sum of digits gives 128278222098.

It is not an unprimeable number, because it can be changed into a prime (128278222091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822296218 + ... + 822296373.

It is an arithmetic number, because the mean of its divisors is an integer number (17268222216).

Almost surely, 2^128278222098 is an apocalyptic number.

128278222098 is an abundant number, since it is smaller than the sum of its proper divisors (148013333358).

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

128278222098 is a wasteful number, since it uses less digits than its factorization.

128278222098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644592609.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 128278222098 in words is "one hundred twenty-eight billion, two hundred seventy-eight million, two hundred twenty-two thousand, ninety-eight".