128968044976 has 20 divisors (see below), whose sum is σ = 249999534472. Its totient is φ = 64452036096.

The previous prime is 128968044971. The next prime is 128968044991. The reversal of 128968044976 is 679440869821.

It is not an unprimeable number, because it can be changed into a prime (128968044971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1965870 + ... + 2030413.

Almost surely, 2^128968044976 is an apocalyptic number.

128968044976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128968044976 is a deficient number, since it is larger than the sum of its proper divisors (121031489496).

128968044976 is a wasteful number, since it uses less digits than its factorization.

128968044976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998308 (or 3998302 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 128968044976 in words is "one hundred twenty-eight billion, nine hundred sixty-eight million, forty-four thousand, nine hundred seventy-six".