99128958960 has 80 divisors (see below), whose sum is σ = 307353078144. Its totient is φ = 26429803776.

The previous prime is 99128958959. The next prime is 99128958977. The reversal of 99128958960 is 6985982199.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 99128958891 and 99128958900.

It is a congruent 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, 1484859 + ... + 1550181.

Almost surely, 2^99128958960 is an apocalyptic number.

It is an amenable number.

99128958960 is an abundant number, since it is smaller than the sum of its proper divisors (208224119184).

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

99128958960 is a wasteful number, since it uses less digits than its factorization.

99128958960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71662 (or 71656 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 66.

The spelling of 99128958960 in words is "ninety-nine billion, one hundred twenty-eight million, nine hundred fifty-eight thousand, nine hundred sixty".