128064322853978 has 32 divisors (see below), whose sum is σ = 227349421498368. Its totient is φ = 52943449906800.

The previous prime is 128064322853939. The next prime is 128064322853993. The reversal of 128064322853978 is 879358223460821.

It is a super-2 number, since 2×128064322853978² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474268700 + ... + 474538647.

It is an arithmetic number, because the mean of its divisors is an integer number (7104669421824).

It is a 1-persistent number, because it is pandigital, but 2⋅128064322853978 = 256128645707956 is not.

Almost surely, 2^{128064322853978} is an apocalyptic number.

128064322853978 is a deficient number, since it is larger than the sum of its proper divisors (99285098644390).

128064322853978 is a wasteful number, since it uses less digits than its factorization.

128064322853978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948807698.

The product of its (nonzero) digits is 278691840, while the sum is 68.

The spelling of 128064322853978 in words is "one hundred twenty-eight trillion, sixty-four billion, three hundred twenty-two million, eight hundred fifty-three thousand, nine hundred seventy-eight".