128078754690198 has 16 divisors (see below), whose sum is σ = 275861933179056. Its totient is φ = 39408847596960.

The previous prime is 128078754690193. The next prime is 128078754690223. The reversal of 128078754690198 is 891096457870821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128078754690193) 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, 821017658193 + ... + 821017658348.

It is an arithmetic number, because the mean of its divisors is an integer number (17241370823691).

Almost surely, 2^{128078754690198} is an apocalyptic number.

128078754690198 is an abundant number, since it is smaller than the sum of its proper divisors (147783178488858).

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

128078754690198 is a wasteful number, since it uses less digits than its factorization.

128078754690198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642035316559.

The product of its (nonzero) digits is 487710720, while the sum is 75.

The spelling of 128078754690198 in words is "one hundred twenty-eight trillion, seventy-eight billion, seven hundred fifty-four million, six hundred ninety thousand, one hundred ninety-eight".