9951663105 has 32 divisors (see below), whose sum is σ = 17874259200. Its totient is φ = 5252829696.

The previous prime is 9951663097. The next prime is 9951663107. The reversal of 9951663105 is 5013661599.

9951663105 is a `hidden beast` number, since 9 + 9 + 5 + 1 + 6 + 631 + 0 + 5 = 666.

9951663105 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9951663105 - 2³ = 9951663097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9951663107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366885 + ... + 393074.

It is an arithmetic number, because the mean of its divisors is an integer number (558570600).

Almost surely, 2^9951663105 is an apocalyptic number.

It is an amenable number.

9951663105 is a deficient number, since it is larger than the sum of its proper divisors (7922596095).

9951663105 is a wasteful number, since it uses less digits than its factorization.

9951663105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760070 (or 760064 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 9951663105 is about 99758.0227600768. The cubic root of 9951663105 is about 2150.9577924722.

It can be divided in two parts, 995 and 1663105, that added together give a square (1664100 = 1290²).

The spelling of 9951663105 in words is "nine billion, nine hundred fifty-one million, six hundred sixty-three thousand, one hundred five".