9906776351 has 16 divisors (see below), whose sum is σ = 10070581248. Its totient is φ = 9744688800.

The previous prime is 9906776291. The next prime is 9906776359. The reversal of 9906776351 is 1536776099.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9906776351 - 2¹⁰ = 9906775327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9906776293 and 9906776302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906776359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14504456 + ... + 14505138.

It is an arithmetic number, because the mean of its divisors is an integer number (629411328).

Almost surely, 2^9906776351 is an apocalyptic number.

9906776351 is a deficient number, since it is larger than the sum of its proper divisors (163804897).

9906776351 is a wasteful number, since it uses less digits than its factorization.

9906776351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The square root of 9906776351 is about 99532.7903306242. The cubic root of 9906776351 is about 2147.7189690181.

The spelling of 9906776351 in words is "nine billion, nine hundred six million, seven hundred seventy-six thousand, three hundred fifty-one".