9787420926806 has 4 divisors (see below), whose sum is σ = 14681131390212. Its totient is φ = 4893710463402.

The previous prime is 9787420926749. The next prime is 9787420926859. The reversal of 9787420926806 is 6086290247879.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2446855231700 + ... + 2446855231703.

It is an arithmetic number, because the mean of its divisors is an integer number (3670282847553).

Almost surely, 2^{9787420926806} is an apocalyptic number.

9787420926806 is a deficient number, since it is larger than the sum of its proper divisors (4893710463406).

9787420926806 is a wasteful number, since it uses less digits than its factorization.

9787420926806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893710463405.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 9787420926806 in words is "nine trillion, seven hundred eighty-seven billion, four hundred twenty million, nine hundred twenty-six thousand, eight hundred six".