969899956128 has 72 divisors (see below), whose sum is σ = 2903318964000. Its totient is φ = 306284194944.

The previous prime is 969899956121. The next prime is 969899956219. The reversal of 969899956128 is 821659998969.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (969899956121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88618428 + ... + 88629371.

It is an arithmetic number, because the mean of its divisors is an integer number (40323874500).

Almost surely, 2^969899956128 is an apocalyptic number.

It is an amenable number.

969899956128 is an abundant number, since it is smaller than the sum of its proper divisors (1933419007872).

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

969899956128 is a wasteful number, since it uses less digits than its factorization.

969899956128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177247834 (or 177247823 counting only the distinct ones).

The product of its digits is 1360488960, while the sum is 81.

The spelling of 969899956128 in words is "nine hundred sixty-nine billion, eight hundred ninety-nine million, nine hundred fifty-six thousand, one hundred twenty-eight".