128089857820578 has 64 divisors (see below), whose sum is σ = 264589737172992. Its totient is φ = 41296477789440.

The previous prime is 128089857820571. The next prime is 128089857820643. The reversal of 128089857820578 is 875028758980821.

It is not an unprimeable number, because it can be changed into a prime (128089857820571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2911971501 + ... + 2912015487.

It is an arithmetic number, because the mean of its divisors is an integer number (4134214643328).

Almost surely, 2^{128089857820578} is an apocalyptic number.

128089857820578 is an abundant number, since it is smaller than the sum of its proper divisors (136499879352414).

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

128089857820578 is a wasteful number, since it uses less digits than its factorization.

128089857820578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52319.

The product of its (nonzero) digits is 1445068800, while the sum is 78.

The spelling of 128089857820578 in words is "one hundred twenty-eight trillion, eighty-nine billion, eight hundred fifty-seven million, eight hundred twenty thousand, five hundred seventy-eight".