128567841378 has 16 divisors (see below), whose sum is σ = 257249941536. Its totient is φ = 42836904000.

The previous prime is 128567841359. The next prime is 128567841379. The reversal of 128567841378 is 873148765821.

It is not an unprimeable number, because it can be changed into a prime (128567841379) 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, 4746151 + ... + 4773162.

It is an arithmetic number, because the mean of its divisors is an integer number (16078121346).

Almost surely, 2^128567841378 is an apocalyptic number.

128567841378 is an abundant number, since it is smaller than the sum of its proper divisors (128682100158).

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

128567841378 is a wasteful number, since it uses less digits than its factorization.

128567841378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521569.

The product of its digits is 18063360, while the sum is 60.

The spelling of 128567841378 in words is "one hundred twenty-eight billion, five hundred sixty-seven million, eight hundred forty-one thousand, three hundred seventy-eight".