9978755570 has 32 divisors (see below), whose sum is σ = 20552313600. Its totient is φ = 3417189696.

The previous prime is 9978755543. The next prime is 9978755623. The reversal of 9978755570 is 755578799.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26225 + ... + 143684.

It is an arithmetic number, because the mean of its divisors is an integer number (642259800).

Almost surely, 2^9978755570 is an apocalyptic number.

9978755570 is an abundant number, since it is smaller than the sum of its proper divisors (10573558030).

9978755570 is a wasteful number, since it uses less digits than its factorization.

9978755570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170762.

The product of its (nonzero) digits is 27783000, while the sum is 62.

The square root of 9978755570 is about 99893.7213742686. The cubic root of 9978755570 is about 2152.9079504651.

The spelling of 9978755570 in words is "nine billion, nine hundred seventy-eight million, seven hundred fifty-five thousand, five hundred seventy".