9621084079809 has 12 divisors (see below), whose sum is σ = 13903182150676. Its totient is φ = 6411258806112.

The previous prime is 9621084079807. The next prime is 9621084079819. The reversal of 9621084079809 is 9089704801269.

9621084079809 is a `hidden beast` number, since 9 + 6 + 210 + 8 + 407 + 9 + 8 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2855508530625 + 6765575549184 = 1689825^2 + 2601072^2 .

It is not a de Polignac number, because 9621084079809 - 2¹ = 9621084079807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9621084079807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233082142 + ... + 233123415.

Almost surely, 2^{9621084079809} is an apocalyptic number.

It is an amenable number.

9621084079809 is a deficient number, since it is larger than the sum of its proper divisors (4282098070867).

9621084079809 is a wasteful number, since it uses less digits than its factorization.

9621084079809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466207856 (or 466207853 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 9621084079809 in words is "nine trillion, six hundred twenty-one billion, eighty-four million, seventy-nine thousand, eight hundred nine".