9856687428730 has 16 divisors (see below), whose sum is σ = 17826122860704. Its totient is φ = 3923989307280.

The previous prime is 9856687428727. The next prime is 9856687428743. The reversal of 9856687428730 is 378247866589.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335705812 + ... + 2335710031.

It is an arithmetic number, because the mean of its divisors is an integer number (1114132678794).

Almost surely, 2^{9856687428730} is an apocalyptic number.

9856687428730 is a deficient number, since it is larger than the sum of its proper divisors (7969435431974).

9856687428730 is a wasteful number, since it uses less digits than its factorization.

9856687428730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671416061.

The product of its (nonzero) digits is 975421440, while the sum is 73.

The spelling of 9856687428730 in words is "nine trillion, eight hundred fifty-six billion, six hundred eighty-seven million, four hundred twenty-eight thousand, seven hundred thirty".