9912765806 has 8 divisors (see below), whose sum is σ = 14890122840. Its totient is φ = 4949391528.

The previous prime is 9912765769. The next prime is 9912765827. The reversal of 9912765806 is 6085672199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3493916 + ... + 3496751.

It is an arithmetic number, because the mean of its divisors is an integer number (1861265355).

Almost surely, 2^9912765806 is an apocalyptic number.

9912765806 is a deficient number, since it is larger than the sum of its proper divisors (4977357034).

9912765806 is a wasteful number, since it uses less digits than its factorization.

9912765806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991378.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 9912765806 is about 99562.8736326950. The cubic root of 9912765806 is about 2148.1517056337.

The spelling of 9912765806 in words is "nine billion, nine hundred twelve million, seven hundred sixty-five thousand, eight hundred six".